CN109243583B - Method and equipment for decentralized management of medical image data based on block chain - Google Patents
Method and equipment for decentralized management of medical image data based on block chain Download PDFInfo
- Publication number
- CN109243583B CN109243583B CN201810746005.7A CN201810746005A CN109243583B CN 109243583 B CN109243583 B CN 109243583B CN 201810746005 A CN201810746005 A CN 201810746005A CN 109243583 B CN109243583 B CN 109243583B
- Authority
- CN
- China
- Prior art keywords
- data
- medical image
- image data
- block chain
- file
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H30/00—ICT specially adapted for the handling or processing of medical images
- G16H30/20—ICT specially adapted for the handling or processing of medical images for handling medical images, e.g. DICOM, HL7 or PACS
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
Abstract
The invention relates to a medical image data decentralized management method based on a block chain.A data all terminal uploads medical image data of the data all terminal, stores the medical image data as an interplanetary file system (IPFS) file, takes a hash value for the medical image data, and encrypts a link list file in the IPFS by adopting a public key of the data all terminal; the data usage right contract decrypts the encrypted link list file in the steps by adopting a private key of all data ends according to the intelligent contract, sends data usage end public key information and a payment token to the data usage right contract at the data usage end, and sends the decrypted link list file to the data usage end after re-encrypting the decrypted link list file by adopting a user public key when the medical image data is requested to be acquired, and meanwhile, generates a block chain for storing the hash address; and the data using end performs decryption operation on the medical image data through the private key of the data using end to obtain a linked list file, and indexes the linked list file to the interplanetary file system to obtain actual medical image data.
Description
Technical Field
The invention relates to the technical field of block chains, in particular to a method and equipment for decentralized management of medical image data based on a block chain.
Background
With the rapid development of big data, the digitization degree of each field is also higher and higher. The PACS (abbreviated to "picture archiving and Communication Systems") system is applied to a system of a hospital image department, and has a main task of storing various daily medical images (including images generated by equipment such as nuclear magnetism, CT, ultrasound, various X-ray machines, various infrared instruments, microscopes and the like) in a digital manner through various interfaces (analog, DICOM, network). In the current medical system, the PACS mainly includes a local PACS and a cloud PACS, and the local PACS has the problems that a storage system is usually based on an expensive special storage system, such as SAN and the like, the capacity is designed at the beginning of construction, and the cost of upgrading and expanding the capacity in the future is very high. However, since data of multiple hospitals are stored in one center in a centralized manner, the cost of network bandwidth and storage load still rises sharply, and meanwhile, the data use authority of the center cannot be supervised, and the security of single-point data is difficult to guarantee. And a PACS based on a distributed storage system can not solve the problems of system data security and access authority control. In the prior art, a distributed storage system can be combined with a centralized data transaction method to establish a distributed PACS system, but the common problems of the centralized system, namely a central owner who is difficult to be monitored and the central performance and security bottleneck, still cannot be solved. Therefore, in order to further improve the data security and authority control of the PACS system and reduce the system cost, a new PASC system is urgently needed to update the existing application system.
Disclosure of Invention
The invention aims to provide a block chain-based medical image data decentralized management method and system, and solves the technical problems that in the prior art, data safety needs to be improved and system cost needs to be reduced.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a medical image data decentralized management method based on a block chain at least comprises the following steps based on the existing open source software component and the block chain technology:
uploading medical image data of all data terminals, storing the medical image data as an interplanetary file system (IPFS) file, taking a hash value of the medical image data, and simultaneously encrypting a link list file in the IPFS by adopting a public key of all data terminals;
the data right of use contract adopts the private key of all ends of the said data to decipher the link list file encrypted in the above-mentioned step according to the intellectual contract, send data user end public key information and pay the token to the said data right of use contract at the data user end, when requesting to obtain the said medical image data, the said data right of use contract adopts the public key of user to decipher the link list file and send to the said data user end after encrypting again, produce the block chain storing the said hash address at the same time;
and the data using end executes decryption operation on the data using end through a data using end private key to obtain a linked list file, and indexes the linked list file to the interplanetary file system to obtain actual medical image data.
Wherein, the consensus mechanism adopted by the block chain is PoW, PoS or DPoS.
The invention also provides a block chain-based medical image data decentralized management system, which at least comprises a plurality of data all terminals, a plurality of data using terminals and a plurality of data use right contract terminals for linking the data all terminals and the data using terminals;
uploading medical image data of all data terminals, storing the medical image data as an interplanetary file system (IPFS) file, taking a hash value of the medical image data, and simultaneously encrypting a link list file in the IPFS by adopting a public key of all data terminals;
the data right of use contract adopts the private key of all ends of the said data to decipher the link list file encrypted in the above-mentioned step according to the intellectual contract, send data user end public key information and pay the token to the said data right of use contract at the data user end, when requesting to obtain the said medical image data, the said data right of use contract adopts the public key of user to decipher the link list file and send to the said data user end after encrypting again, produce the block chain storing the said hash address at the same time;
and the data using end executes decryption operation on the data using end through a data using end private key to obtain a linked list file, and indexes the linked list file to the interplanetary file system to obtain actual medical image data.
The invention also discloses a block chain-based medical image data decentralized management system, which comprises a network, a memory, a processor and a computer program stored in the memory and capable of running on the processor, and is characterized in that the steps of the method are realized when the processor executes the computer program.
The invention also discloses a computer-readable storage medium, in which a computer program is stored, characterized in that the computer program realizes the steps of the method when being executed by a processor.
The invention has the following beneficial effects: the invention provides a decentralization method different from local PACS and cloud PACS which are conventionally used by hospitals, which can enable hospitals to jointly establish and maintain a decentralization distributed PACS and ensure the safety problem of distributed storage of data among hospitals through a block chain. And can coordinate the load among hospitals and the assignment of authority and responsibility of data interaction between the hospitals and the third-party image centers and the third parties, such as scientific research, insurance and the like, through tokens. Finally, a safe, distributed and self-organizing PACS system which is commonly maintained by all users of the system including the hospital is formed, and compared with the traditional local area network PACS and the centralized cloud PACS, the block chain-based PACS management method has the following advantages:
1. the system has no central service provider, so that the running transparency of the system can be improved;
2. the propagation path of the data can be accurately tracked through the block chain;
3. the multi-place distributed storage is beneficial to long-term storage of data;
4. the centralized network bandwidth and storage requirement is not needed, so that the overall cost of the system can be greatly reduced;
5. the single-point performance bottleneck does not exist, and the overall efficiency of the system can be greatly improved;
6. the history of the data content and propagation paths is guaranteed by the blockchain to be not tampered with.
Drawings
Fig. 1 is a simplified flowchart of an embodiment of a method for decentralized management of medical image data based on blockchain according to the present invention.
Detailed Description
The block chain based medical image data decentralized management method and system establish a decentralized PACS system which is commonly maintained by a plurality of hospitals, can linearly expand the capacity with cost, is safer and is supervised through the block chain and the distributed file system, the decentralized problem enables the bandwidth bottleneck and the safety problem of a single-point network to be solved, the use of the block chain technology ensures the control of the ownership and the access right of data in the system, and the unlimited right of a certain party to all data can not be generated.
The technical solution of the present invention is further described below with reference to the following embodiments and the accompanying drawings.
The invention provides a medical image data decentralized management method based on a block chain, which is based on the existing open source software component and the block chain technology and at least comprises the following steps:
uploading medical image data of all data terminals, storing the medical image data as an interplanetary file system (IPFS) file, taking a hash value of the medical image data, and simultaneously encrypting a link list file in the IPFS by adopting a public key of all data terminals;
the data right of use contract adopts the private key of all ends of the said data to decipher the link list file encrypted in the above-mentioned step according to the intellectual contract, send data user end public key information and pay the token to the said data right of use contract at the data user end, when requesting to obtain the said medical image data, the said data right of use contract adopts the public key of user to decipher the link list file and send to the said data user end after encrypting again, produce the block chain storing the said hash address at the same time;
and the data using end executes decryption operation on the data using end through a data using end private key to obtain a linked list file, and indexes the linked list file to the interplanetary file system to obtain actual medical image data. Wherein, the consensus mechanism adopted by the block chain is PoW, PoS or DPoS.
The method is implemented based on the existing open source software component, wherein the key points are as follows:
1. according to the storage principle of the IPFS, a large File (>256kB) is represented by a Link List (Link List), each Link in the List points to a File block smaller than 256kB, so that the large File can be represented by an object containing a small data volume, medical image data is often large, and the efficiency of directly encrypting and decrypting the image data is low, so that the Link Link List File corresponding to the image File is encrypted instead of directly encrypting the image File. Therefore, when reading the file stored in the IPFS, the Link list file corresponding to the file needs to be decrypted first to obtain the fragmented Link information of the actual file.
2. The method of the invention can lead the prior PACS system to be adaptive to IPFS storage, the prior PACS can use conventional local storage or cloud storage to store image data, such as excellent and mature open source PACS components like dcm4chee, and the like, and the adaptation work is achieved by providing an abstract storage model interface and corresponding to the realization of different storage systems.
3. The access security and traceability of data are ensured by a blockchain and an intelligent contract, the access authority of the data for transaction between different users is allowed, a hash address of image data which is expected to be used by a data user in an IPFS is stored in the blockchain (the specific characteristics and technical principles of the related blockchain can refer to the content of the prior art), a link list of corresponding data can be found in the IPFS according to the hash address, as shown in figure 1, the link list of the IPFS is encrypted by a public key of a data owner, so that the user directly takes the encrypted link list, and the actual link list can be obtained after decryption so as to obtain the data from the IPFS. Therefore, in the present invention, based on the concept of the smart contract (the smart contract is the content of the prior art, and will not be described herein), the private key of the data owner is needed to decrypt the encrypted linked list during execution, and the decryption result is returned to the user for obtaining the actual image data from the IPFS for use.
In the scheme of the invention, the corresponding blockchain needs to store the hash value representing the data to be traded, all the end public keys representing the identities of both parties to be traded and the user end public key to be output in an intelligent contract, so that the hash value, the all the end public keys representing the identities of both parties to be traded and the user end public key do not need to be stored in the blockchain, and the size of the blockchain is reduced.
The invention also discloses a block chain-based medical image data decentralized management system, which at least comprises a plurality of data all terminals, a plurality of data using terminals and a plurality of data use right contract terminals for linking the data all terminals and the data using terminals;
uploading medical image data of all data terminals, storing the medical image data as an interplanetary file system (IPFS) file, taking a hash value of the medical image data, and simultaneously encrypting a link list file in the IPFS by adopting a public key of all data terminals;
the data right of use contract adopts the private key of all ends of the said data to decipher the link list file encrypted in the above-mentioned step according to the intellectual contract, send data user end public key information and pay the token to the said data right of use contract at the data user end, when requesting to obtain the said medical image data, the said data right of use contract adopts the public key of user to decipher the link list file and send to the said data user end after encrypting again, produce the block chain storing the said hash address at the same time;
and the data using end executes decryption operation on the data using end through a data using end private key to obtain a linked list file, and indexes the linked list file to the interplanetary file system to obtain actual medical image data.
The system correspondingly executes the process of the method, and thus, the description is omitted.
The invention also discloses a block chain-based medical image data decentralized management system, which comprises a network, a memory, a processor and a computer program stored in the memory and capable of running on the processor, and is characterized in that the steps of the method are realized when the processor executes the computer program. In this embodiment, the processor may be a hardware component such as a Central Processing Unit (CPU), the memory may be a hard disk, a memory, a plug-in hard disk, a smart memory card, a storage device such as a secure digital card flash memory, and the like, and the computer program includes a computer program code, a source code format, an object code, an executable file or some intermediate format, and the like.
The invention also discloses a computer-readable storage medium, in which a computer program is stored, characterized in that the computer program realizes the steps of the method when being executed by a processor. The program can be realized by using Go, JavaScript, Python, C + +, Java and other languages, and can also be realized by combining every two programs.
In summary, the present invention utilizes a distributed storage scheme of P2P such as IPFS to manage medical image data; the ownership, access right, transaction safety and incentive member co-maintenance system operation of the medical image data are ensured by using a block chain, an intelligent contract and an encrypted IPFS system; the encrypted object is a linked list stored by the IPFS, not the original data; the contract generates a linked list encrypted with the public key of the data consumer so that only the consumer can decrypt it, not the unencrypted linked list.
In addition, although the present invention may employ a scheme of directly encrypting original data, since image data is often large, the use efficiency of data is much lower. It is also feasible that the smart contract directly generates the decrypted original link list, but it is more difficult to ensure the security of the original data circulation compared with the method of re-encrypting with the public key of the user in the present scheme.
Therefore, the decentralized method is different from the local PACS and the cloud PACS which are conventionally used by hospitals, a decentralized distributed PACS can be jointly established and maintained among the hospitals, the safety problem of distributed storage of data among the hospitals is guaranteed through a block chain, the load among the hospitals can be coordinated through tokens, and the responsibility distribution of data interaction between the hospitals and third-party image centers and third parties, such as scientific research, insurance and the like, can be carried out. Ultimately resulting in a secure, distributed, ad hoc PACS system that is maintained by all users of the system, including hospitals.
Compared with the traditional local area network PACS and the centralized cloud PACS, the PACS management method based on the block chain has the following advantages: the system has no central service provider, so that the running transparency of the system can be improved; the propagation path of the data can be accurately tracked through the block chain; the multi-place distributed storage is beneficial to long-term storage of data; the centralized network bandwidth and storage requirement is not needed, so that the overall cost of the system can be greatly reduced; the single-point performance bottleneck does not exist, and the overall efficiency of the system can be greatly improved; the history of the data content and propagation paths is guaranteed by the blockchain to be not tampered with. The block chain consensus mechanism can flexibly select different consensus mechanisms such as PoW, PoS, DPoS and the like according to specific requirements, and can realize the same block chain PACS system.
The sequence of the above embodiments is only for convenience of description and does not represent the advantages and disadvantages of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (4)
1. A medical image data decentralized management method based on a block chain is based on the existing open source software component and the block chain technology, and is characterized by at least comprising the following steps:
uploading medical image data of all data terminals, storing the medical image data as an interplanetary file system (IPFS) file, taking a hash value of the medical image data, and simultaneously encrypting a link list file in the IPFS by adopting a public key of all data terminals;
the data right of use contract adopts the private key of all ends of the said data to decipher the link list file encrypted in the above-mentioned step according to the intellectual contract, send data user end public key information and pay the token to the said data right of use contract at the data user end, when requesting to obtain the said medical image data, the said data right of use contract adopts the public key of user to decipher the link list file and send to the said data user end after encrypting again, produce the block chain storing the said hash address at the same time; the block chain stores hash addresses of the image data in the IPFS, which the data user wants to use, and a link list of corresponding data can be found in the IPFS according to the hash addresses;
the data using end executes decryption operation on the data using end through a data using end private key to obtain a linked list file, and indexes the linked list file to the interplanetary file system to obtain actual medical image data;
the block chain adopts a consensus mechanism of PoW, PoS or DPoS.
2. The medical image data decentralized management system based on the block chain is characterized by at least comprising a plurality of data all terminals, a plurality of data using terminals and a plurality of data use right contract terminals for linking the data all terminals and the data using terminals;
uploading medical image data of all data terminals, storing the medical image data as an interplanetary file system (IPFS) file, taking a hash value of the medical image data, and simultaneously encrypting a link list file in the IPFS by adopting a public key of all data terminals;
the data right of use contract adopts the private key of all ends of the said data to decipher the link list file encrypted in the above-mentioned step according to the intellectual contract, send data user end public key information and pay the token to the said data right of use contract at the data user end, when requesting to obtain the said medical image data, the said data right of use contract adopts the public key of user to decipher the link list file and send to the said data user end after encrypting again, produce the block chain storing the said hash address at the same time; the block chain stores hash addresses of the image data in the IPFS, which the data user wants to use, and a link list of corresponding data can be found in the IPFS according to the hash addresses;
and the data using end executes decryption operation on the data using end through a data using end private key to obtain a linked list file, and indexes the linked list file to the interplanetary file system to obtain actual medical image data.
3. A blockchain-based medical image data decentralized management system, comprising a network, a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method according to claim 1.
4. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method as set forth in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810746005.7A CN109243583B (en) | 2018-07-09 | 2018-07-09 | Method and equipment for decentralized management of medical image data based on block chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810746005.7A CN109243583B (en) | 2018-07-09 | 2018-07-09 | Method and equipment for decentralized management of medical image data based on block chain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109243583A CN109243583A (en) | 2019-01-18 |
| CN109243583B true CN109243583B (en) | 2020-05-12 |
Family
ID=65071842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810746005.7A Active CN109243583B (en) | 2018-07-09 | 2018-07-09 | Method and equipment for decentralized management of medical image data based on block chain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109243583B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11803664B2 (en) | 2018-10-09 | 2023-10-31 | Ebay Inc. | Distributed application architectures using blockchain and distributed file systems |
| CN110008194A (en) * | 2019-03-01 | 2019-07-12 | 上海七印信息科技有限公司 | A kind of rapid file acquisition methods based on block chain and interspace file system IPFS |
| CN109886692B (en) * | 2019-03-08 | 2021-05-07 | 泰康保险集团股份有限公司 | Data transmission method, device, medium and electronic equipment based on block chain |
| CN109831527B (en) * | 2019-03-13 | 2021-12-28 | 试金石信用服务有限公司 | File processing method, user side, server and readable storage medium |
| CN109934012A (en) * | 2019-03-20 | 2019-06-25 | 福建师范大学 | Medical records secure storage access method based on block chain network |
| CN110059054A (en) * | 2019-03-25 | 2019-07-26 | 天津大学 | It is a kind of based on the information of vehicles of block chain and IPFS storage and search method |
| CN110008746B (en) * | 2019-04-01 | 2020-11-03 | 大连理工大学 | Block chain-based medical record storage, sharing and safety claim settlement model and method |
| CN110225049A (en) * | 2019-06-20 | 2019-09-10 | 哈工大机器人湖州国际创新研究院 | Data transmission method, client and server |
| CN112446035A (en) * | 2019-09-05 | 2021-03-05 | 阿里健康科技(中国)有限公司 | Data management method and device |
| CN111104386B (en) * | 2019-11-04 | 2023-09-01 | 京东科技信息技术有限公司 | File storage method, terminal and storage medium |
| CN111832038B (en) * | 2020-05-22 | 2022-10-14 | 南京邮电大学 | Implementation method of medical data sharing model based on block chain and IPFS |
| CN111726343A (en) * | 2020-06-11 | 2020-09-29 | 桂林电子科技大学 | Electronic official document safe transmission method based on IPFS and block chain |
| US11436377B2 (en) * | 2020-06-26 | 2022-09-06 | Ncr Corporation | Secure workload image distribution and management |
| CN112447291B (en) * | 2020-11-23 | 2023-03-28 | 四川大学华西医院 | Block chain-based method for sharing hospital data |
| CN112382376A (en) * | 2020-12-03 | 2021-02-19 | 上海计算机软件技术开发中心 | Medical instrument management tracing system based on block chain |
| CN113098941B (en) * | 2021-03-25 | 2022-07-01 | 浙江大学 | Virtual reality content distributed management method and system based on integral excitation |
| WO2023161830A1 (en) * | 2022-02-23 | 2023-08-31 | Chernobelsky Ivgenia | Distributed electronic ledger storage including reduced images |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106682530A (en) * | 2017-01-10 | 2017-05-17 | 杭州电子科技大学 | Method and device for medical information sharing privacy protection based on blockchain technology |
| CN107105041B (en) * | 2017-04-27 | 2019-09-03 | 电子科技大学 | One medical big data management system and method based on block chain |
| CN107273410B (en) * | 2017-05-03 | 2020-07-07 | 上海点融信息科技有限责任公司 | Block chain based distributed storage |
| CN107086920A (en) * | 2017-06-20 | 2017-08-22 | 无锡井通网络科技有限公司 | Copyright based on block chain really weighs method |
| CN108063752B (en) * | 2017-11-02 | 2020-05-08 | 暨南大学 | Credible gene detection and data sharing method based on block chain and agent re-encryption |
-
2018
- 2018-07-09 CN CN201810746005.7A patent/CN109243583B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109243583A (en) | 2019-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109243583B (en) | Method and equipment for decentralized management of medical image data based on block chain | |
| Fabian et al. | Collaborative and secure sharing of healthcare data in multi-clouds | |
| CN109120639B (en) | Data cloud storage encryption method and system based on block chain | |
| CN109144961B (en) | Authorization file sharing method and device | |
| CN111818032B (en) | Data processing method and device based on cloud platform and computer program | |
| CN106127075B (en) | Encryption method can search for based on secret protection under a kind of cloud storage environment | |
| McFarlane et al. | Patientory: A healthcare peer-to-peer EMR storage network v1 | |
| US9767299B2 (en) | Secure cloud data sharing | |
| US11243688B1 (en) | Bi-directional application switching with contextual awareness | |
| US10609010B2 (en) | System, methods and software application for sending secured messages on decentralized networks | |
| JP6300800B2 (en) | Encrypted data storage device for recording | |
| Ribeiro et al. | XDS-I outsourcing proxy: ensuring confidentiality while preserving interoperability | |
| CN106845075B (en) | Centralized diagnosis report system | |
| KR20200145400A (en) | Notarizing platform server and method for notarizing digital work | |
| CN112016104B (en) | Encryption method, device and system for financial sensitive data | |
| CN115618321A (en) | Access control method and device, electronic equipment and storage medium | |
| CN106888213B (en) | Cloud ciphertext access control method and system | |
| CN112182109A (en) | Distributed data coding storage method based on block chain and electronic equipment | |
| CN111427860B (en) | Distributed storage system and data processing method thereof | |
| EP3809300A1 (en) | Method and apparatus for data encryption, method and apparatus for data decryption | |
| US9251375B1 (en) | Use case-specific entity identifiers | |
| CN112489742A (en) | Prescription circulation processing method and device | |
| CN112202555A (en) | Information processing method, device and equipment for generating random number based on attribute of information | |
| CN112446035A (en) | Data management method and device | |
| CN110414267A (en) | BIM design software secure storage and circulation retrospect monitoring technology, system and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Room J1839, 1st floor, 1185 Huyi Highway, Jiading District, Shanghai 201800 Applicant after: Research Territory Information Technology (Shanghai) Co., Ltd. Address before: Room J1839, 1st floor, 1185 Huyi Highway, Jiading District, Shanghai 201800 Applicant before: Jingjing information technology (Shanghai) Co., Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200706 Address after: Room 101-305 and 5 floors of B1, 1st, 2nd and 3rd floors of Building No. 8, 406 Guilin Road, Xuhui District, Shanghai, 2003 Patentee after: SHANGHAI UNIVERSAL MEDICAL IMAGING DIAGNOSIS CENTER Co.,Ltd. Address before: Room J1839, 1st floor, 1185 Huyi Highway, Jiading District, Shanghai 201800 Patentee before: Research Territory Information Technology (Shanghai) Co.,Ltd. |
|
| TR01 | Transfer of patent right |