CN112644819A - Hazardous waste rigid landfill pretreatment process - Google Patents
Hazardous waste rigid landfill pretreatment process Download PDFInfo
- Publication number
- CN112644819A CN112644819A CN202011535870.0A CN202011535870A CN112644819A CN 112644819 A CN112644819 A CN 112644819A CN 202011535870 A CN202011535870 A CN 202011535870A CN 112644819 A CN112644819 A CN 112644819A
- Authority
- CN
- China
- Prior art keywords
- bag
- ton
- ton bag
- materials
- breaking
- 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.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B69/00—Unpacking of articles or materials, not otherwise provided for
- B65B69/0008—Opening and emptying bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
- B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
- B01F27/701—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms comprising two or more shafts, e.g. in consecutive mixing chambers
- B01F27/706—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms comprising two or more shafts, e.g. in consecutive mixing chambers with all the shafts in the same receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B1/00—Dumping solid waste
- B09B1/004—Covering of dumping sites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/04—Methods of, or means for, filling the material into the containers or receptacles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/30—Devices or methods for controlling or determining the quantity or quality or the material fed or filled
- B65B1/32—Devices or methods for controlling or determining the quantity or quality or the material fed or filled by weighing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B63/00—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged
- B65B63/02—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for compressing or compacting articles or materials prior to wrapping or insertion in containers or receptacles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B69/00—Unpacking of articles or materials, not otherwise provided for
- B65B69/0033—Unpacking of articles or materials, not otherwise provided for by cutting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/30—Landfill technologies aiming to mitigate methane emissions
Abstract
The invention discloses a hazardous waste rigid landfill pretreatment process which comprises a ton bag lifting system, a bag breaking feeding system, a closed dust removal system, a mixing and stirring system, a ton bag packaging system, a weighing system and a PLC control system. The bag breaking and bagging method is used for re-breaking and bagging dangerous and waste packages which are unqualified to enter a field; for similar compatible hazardous wastes, bagging the hazardous wastes again after mixing the materials, and reducing the water content; during the packing, ton bag passes through the vibration of vibration platform, and danger is useless in the tamping bag, reaches the volume reduction effect.
Description
Technical Field
The invention relates to a rigid landfill pretreatment process for hazardous wastes.
Background
Solid waste with dangerous characteristics listed in a national dangerous waste catalogue or identified according to a national specified dangerous waste identification standard and identification method can be landfilled in a site if meeting the site entry requirement of a landfill site. The landfill is divided into a flexible landfill and a rigid landfill. According to the hazardous waste landfill pollution control standard (GB 18598-2019), hazardous waste entering a rigid landfill needs to be pretreated under specific conditions to be landfilled, but the prior art does not have an effective pretreatment equipment process.
Disclosure of Invention
The invention mainly solves the technical problem of providing a bag-breaking and bagging method for dangerous and waste packages which are unqualified to enter a field; for similar compatible hazardous wastes, bagging the hazardous wastes again after mixing the materials, and reducing the water content; during packaging, the ton bag vibrates through the vibration platform, and dangerous waste in the bag is tamped, so that the dangerous waste rigid landfill pretreatment process with the volume reduction effect is achieved.
In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a useless rigidity landfill preliminary treatment technology of danger, including ton bag lift system, broken bag charge-in system, airtight dust pelletizing system, mixing stirring system, ton bag package system, weighing system and PLC control system, concrete step is as follows:
1) ton bag lift system: manually hoisting the ton bag to an automatic bag removing machine by adopting a bridge crane;
2) bag-breaking feeding system: the opening and closing door of the automatic bag opening machine is controlled by a door opening air cylinder, the ton bag descends to the position of a breaking and dismantling cutter through dead weight, the breaking and dismantling cutter cuts the bottom of the ton bag in the descending process of the ton bag, and meanwhile, a bag beating/tearing air cylinder is operated in the discharging process and at the end of the discharging process of the unpacking materials to clean the residual materials in the ton bag;
3) a closed dust removal system: one side of the automatic bag opening machine is communicated with a closed dust removal mechanism for adsorbing internal dust;
4) mixing and stirring system: after the materials are roughly selected by a screen in the automatic bag dismantling machine, the materials enter a lower mixing stirrer through a pneumatic gate valve, and the stirring time of the mixing stirrer can be set on site according to actual conditions;
5) ton bag packaging system: the materials after being fully stirred are discharged into a packer, when the weight of the materials entering the ton bag reaches a set weight, the discharge door of the mixing stirrer is closed, the lifting arm descends at the same time, and the ton bag descends to a transferred slide rail trolley;
6) a weighing system: pushing out the ton bags from the sliding rail trolley through an ejection cylinder, transferring the ton bags to a platform scale through a forklift for weighing, then stacking the ton bags in a centralized manner, and loading the ton bags to a landfill site for landfill in batches;
7) a PLC control system: the weighing data are transmitted to the PLC and can be recorded and stored by a computer.
In a preferred embodiment of the invention, the bag breaking and feeding system is provided with 4 groups of splitting knives which are arranged in a cross shape to cut the bottom of the ton bag.
In a preferred embodiment of the invention, four sets of weighing sensors are provided on the baler ton bag lifting arm of the ton bag packaging system.
In a preferred embodiment of the present invention, a vibration platform is disposed below the trolley, and when the ton bag descends to the trolley, the vibration platform is operated in situ to vibrate and compact the material in the ton bag.
The invention has the beneficial effects that: the bag breaking and bagging method is used for re-breaking and bagging dangerous and waste packages which are unqualified to enter a field; for similar compatible hazardous wastes, bagging the hazardous wastes again after mixing the materials, and reducing the water content; during the packing, ton bag passes through the vibration of vibration platform, and danger is useless in the tamping bag, reaches the volume reduction effect.
Drawings
FIG. 1 is a flow chart of a preferred embodiment of the present invention for rigid landfill pretreatment of hazardous waste.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, enables those skilled in the art to more readily understand the advantages and features of the present invention and to clearly define the scope of the invention.
Referring to fig. 1, an embodiment of the present invention includes: the utility model provides a useless rigidity landfill preliminary treatment process of danger, includes ton bag lift system, broken bag charge-in system, airtight dust pelletizing system, mixing stirring system, ton bag package system, weighing system and PLC control system, and concrete step is as follows:
1) ton bag lift system: manually hoisting the ton bag to an automatic bag removing machine by adopting a bridge crane;
2) bag-breaking feeding system: the opening and closing door of the automatic bag opening machine is controlled by a door opening air cylinder, the ton bag descends to the position of a breaking and dismantling cutter through dead weight, 4 groups of breaking and dismantling cutters are arranged, the bottom of the ton bag is cut open in a cross shape by the breaking and dismantling cutters in the descending process of the ton bag, and meanwhile, a bag beating/tearing air cylinder is operated in the discharging process and at the end of the discharging process of the unpacking materials to clean the residual materials in the ton bag;
3) a closed dust removal system: one side of the automatic bag opening machine is communicated with a closed dust removal mechanism for adsorbing internal dust, so that the sanitation of a working environment is protected, and direct contact between workers and material dust is avoided;
4) mixing and stirring system: after the materials are roughly selected by a screen in the automatic bag dismantling machine, the materials enter a lower mixing stirrer through a pneumatic gate valve, and the stirring time of the mixing stirrer can be set on site according to actual conditions;
5) ton bag packaging system: the materials after full stirring are discharged into a packing machine, four groups of weighing sensors are arranged on a ton bag lifting arm of the packing machine, when the weight of the materials entering the ton bag reaches a set weight, a discharging door of the mixing and stirring machine is closed, the lifting arm descends at the same time, the ton bag descends to a transferred slide rail trolley, a vibration platform is arranged below the slide rail trolley, and when the ton bag descends to the slide rail trolley, the vibration platform is operated in place to tamp the materials in the ton bag through vibration;
6) a weighing system: pushing out the ton bags from the sliding rail trolley through an ejection cylinder, transferring the ton bags to a platform scale through a forklift for weighing, then stacking the ton bags in a centralized manner, and loading the ton bags to a landfill site for landfill in batches;
7) a PLC control system: the weighing data are transmitted to the PLC and can be recorded and stored by a computer.
The invention relates to a rigid landfill pretreatment process for hazardous waste, which is used for re-breaking and bagging hazardous waste packages which are unqualified to enter a field; for similar compatible hazardous wastes, bagging the hazardous wastes again after mixing the materials, and reducing the water content; during the packing, ton bag passes through the vibration of vibration platform, and danger is useless in the tamping bag, reaches the volume reduction effect.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (4)
1. A hazardous waste rigid landfill pretreatment process is characterized by comprising the following steps: including ton bag lift system, broken bag feed system, airtight dust pelletizing system, mixing stirring system, ton bag package system, weighing system and PLC control system, concrete step is as follows:
1) ton bag lift system: manually hoisting the ton bag to an automatic bag removing machine by adopting a bridge crane;
2) bag-breaking feeding system: the opening and closing door of the automatic bag opening machine is controlled by a door opening air cylinder, the ton bag descends to the position of a breaking and dismantling cutter through dead weight, the breaking and dismantling cutter cuts the bottom of the ton bag in the descending process of the ton bag, and meanwhile, a bag beating/tearing air cylinder is operated in the discharging process and at the end of the discharging process of the unpacking materials to clean the residual materials in the ton bag;
3) a closed dust removal system: one side of the automatic bag opening machine is communicated with a closed dust removal mechanism for adsorbing internal dust;
4) mixing and stirring system: after the materials are roughly selected by a screen in the automatic bag dismantling machine, the materials enter a lower mixing stirrer through a pneumatic gate valve, and the stirring time of the mixing stirrer can be set on site according to actual conditions;
5) ton bag packaging system: the materials after being fully stirred are discharged into a packer, when the weight of the materials entering the ton bag reaches a set weight, the discharge door of the mixing stirrer is closed, the lifting arm descends at the same time, and the ton bag descends to a transferred slide rail trolley;
6) a weighing system: pushing out the ton bags from the sliding rail trolley through an ejection cylinder, transferring the ton bags to a platform scale through a forklift for weighing, then stacking the ton bags in a centralized manner, and loading the ton bags to a landfill site for landfill in batches;
7) a PLC control system: the weighing data are transmitted to the PLC and can be recorded and stored by a computer.
2. The hazardous waste rigid landfill pretreatment process according to claim 1, characterized in that: broken sword of tearing open among broken bag charge-in system is provided with 4 groups and cuts open ton package bottom with the cross.
3. The hazardous waste rigid landfill pretreatment process according to claim 1, characterized in that: four groups of weighing sensors are arranged on a baler ton bag lifting arm in the ton bag packaging system.
4. The hazardous waste rigid landfill pretreatment process according to claim 1, characterized in that: a vibration platform is arranged below the sliding rail trolley in the ton bag packaging system, and when the ton bags descend to the sliding rail trolley, the vibration platform is operated in situ to vibrate and solidify materials in the ton bags.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011535870.0A CN112644819A (en) | 2020-12-23 | 2020-12-23 | Hazardous waste rigid landfill pretreatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011535870.0A CN112644819A (en) | 2020-12-23 | 2020-12-23 | Hazardous waste rigid landfill pretreatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112644819A true CN112644819A (en) | 2021-04-13 |
Family
ID=75359291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011535870.0A Pending CN112644819A (en) | 2020-12-23 | 2020-12-23 | Hazardous waste rigid landfill pretreatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112644819A (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2848707Y (en) * | 2005-11-09 | 2006-12-20 | 上海宝钢工业检测公司 | Bag breaking device |
| CN202389656U (en) * | 2011-12-02 | 2012-08-22 | 上海宝钢磁业有限公司 | Passive automatic ton bag opener |
| CN103204253A (en) * | 2013-04-11 | 2013-07-17 | 确成硅化学股份有限公司 | Full-automatic bulk bag packaging machine with side-erected single arm |
| CN203638126U (en) * | 2013-12-19 | 2014-06-11 | 湖南兴瑞新材料研究发展有限公司 | Ton bag packaging system |
| US20170151592A1 (en) * | 2014-10-27 | 2017-06-01 | Trumbull Holdings, LLC | Portable system and method for processing waste to be placed in landfill |
| CN107264879A (en) * | 2017-07-26 | 2017-10-20 | 蓬莱圣为智能设备有限公司 | A kind of jumbo bag automatic bag-supplying device and jumbo bag automatic packaging system |
| CN207450305U (en) * | 2017-10-26 | 2018-06-05 | 广州鹿山新材料股份有限公司 | A kind of jumbo bag metering packing equipment |
| CN208715688U (en) * | 2018-08-21 | 2019-04-09 | 河北南玻玻璃有限公司 | The broken bag combination tool of powder packaging bag |
| CN210448803U (en) * | 2019-06-20 | 2020-05-05 | 海南宝来工贸有限公司 | Stirring and pre-humidifying device for dangerous waste solid materials |
| CN210503541U (en) * | 2019-07-30 | 2020-05-12 | 安丘博阳机械制造有限公司 | Ton bag, pouch tear a bag all-in-one open |
| CN210786973U (en) * | 2019-08-14 | 2020-06-19 | 中材国际环境工程（北京）有限公司 | Dustless processing system of powdery material |
| CN210853247U (en) * | 2019-09-27 | 2020-06-26 | 中材国际环境工程（北京）有限公司 | Integrated treatment device for ton bagged powdery materials |
| CN210943469U (en) * | 2019-10-08 | 2020-07-07 | 青岛新型建设机械有限公司 | Hazardous waste solidification equipment ton bag fly ash conveying and metering system |
| CN211246439U (en) * | 2019-12-13 | 2020-08-14 | 江苏景泽环保科技有限公司 | Loading attachment of useless raw materials of danger |
| CN211366740U (en) * | 2019-11-13 | 2020-08-28 | 湖南中冶长天节能环保技术有限公司 | Activated carbon filling system |
| CN211893986U (en) * | 2020-01-21 | 2020-11-10 | 华润水泥（昌江）有限公司 | Ton bag unpacking device for dangerous waste materials |
| CN211969802U (en) * | 2020-01-17 | 2020-11-20 | 青岛力汇科技有限公司 | Powder ton package quantitative packaging system |
-
2020
- 2020-12-23 CN CN202011535870.0A patent/CN112644819A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2848707Y (en) * | 2005-11-09 | 2006-12-20 | 上海宝钢工业检测公司 | Bag breaking device |
| CN202389656U (en) * | 2011-12-02 | 2012-08-22 | 上海宝钢磁业有限公司 | Passive automatic ton bag opener |
| CN103204253A (en) * | 2013-04-11 | 2013-07-17 | 确成硅化学股份有限公司 | Full-automatic bulk bag packaging machine with side-erected single arm |
| CN203638126U (en) * | 2013-12-19 | 2014-06-11 | 湖南兴瑞新材料研究发展有限公司 | Ton bag packaging system |
| US20170151592A1 (en) * | 2014-10-27 | 2017-06-01 | Trumbull Holdings, LLC | Portable system and method for processing waste to be placed in landfill |
| CN107264879A (en) * | 2017-07-26 | 2017-10-20 | 蓬莱圣为智能设备有限公司 | A kind of jumbo bag automatic bag-supplying device and jumbo bag automatic packaging system |
| CN207450305U (en) * | 2017-10-26 | 2018-06-05 | 广州鹿山新材料股份有限公司 | A kind of jumbo bag metering packing equipment |
| CN208715688U (en) * | 2018-08-21 | 2019-04-09 | 河北南玻玻璃有限公司 | The broken bag combination tool of powder packaging bag |
| CN210448803U (en) * | 2019-06-20 | 2020-05-05 | 海南宝来工贸有限公司 | Stirring and pre-humidifying device for dangerous waste solid materials |
| CN210503541U (en) * | 2019-07-30 | 2020-05-12 | 安丘博阳机械制造有限公司 | Ton bag, pouch tear a bag all-in-one open |
| CN210786973U (en) * | 2019-08-14 | 2020-06-19 | 中材国际环境工程（北京）有限公司 | Dustless processing system of powdery material |
| CN210853247U (en) * | 2019-09-27 | 2020-06-26 | 中材国际环境工程（北京）有限公司 | Integrated treatment device for ton bagged powdery materials |
| CN210943469U (en) * | 2019-10-08 | 2020-07-07 | 青岛新型建设机械有限公司 | Hazardous waste solidification equipment ton bag fly ash conveying and metering system |
| CN211366740U (en) * | 2019-11-13 | 2020-08-28 | 湖南中冶长天节能环保技术有限公司 | Activated carbon filling system |
| CN211246439U (en) * | 2019-12-13 | 2020-08-14 | 江苏景泽环保科技有限公司 | Loading attachment of useless raw materials of danger |
| CN211969802U (en) * | 2020-01-17 | 2020-11-20 | 青岛力汇科技有限公司 | Powder ton package quantitative packaging system |
| CN211893986U (en) * | 2020-01-21 | 2020-11-10 | 华润水泥（昌江）有限公司 | Ton bag unpacking device for dangerous waste materials |
Non-Patent Citations (1)
| Title |
|---|
| 姚鹏程、顾利星等: "危险废物回转窑焚烧系统及烟气净化工程实例", 《中国环保产业》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102923363B (en) | Bagged cement automatic bag-opening and discharging device for nuclear power station | |
| CN116281283A (en) | Intelligent ton bag feeding system | |
| CN210364715U (en) | Ton bag measurement bale breaking device | |
| CN110902416A (en) | Movable multi-specification packaging dustproof rapid discharging device and method | |
| CN112644819A (en) | Hazardous waste rigid landfill pretreatment process | |
| CN210853247U (en) | Integrated treatment device for ton bagged powdery materials | |
| CN205932508U (en) | Automatic feeder of material | |
| CN108246453A (en) | A kind of clean environment firendly solid waste Special crushing device | |
| CN208356957U (en) | A kind of clean and environmental protection solid waste Special crushing device | |
| CN206701928U (en) | Domestic waste crushes packaging all-in-one machine | |
| CN215794569U (en) | Integral type packing apparatus | |
| CN210943469U (en) | Hazardous waste solidification equipment ton bag fly ash conveying and metering system | |
| KR200409103Y1 (en) | recycling system of industrial wastes | |
| CN213200346U (en) | Ton bag breaking device | |
| CN214930791U (en) | Intelligent integrated sack filling machine | |
| CN211167718U (en) | Full-automatic batching system | |
| CN213557587U (en) | Building decoration garbage comprehensive treatment system | |
| CN202923964U (en) | Automatic bag-opening and discharging device for bagged cement of nuclear power plant | |
| CN212829372U (en) | Movable automatic efficient batching and weighing trolley | |
| CN210752520U (en) | Automatic solid waste batching system for hazardous waste solidification equipment | |
| CN216509657U (en) | Device suitable for ton bag powder material loading | |
| CN209684799U (en) | A kind of solid waste rubbish protects obturator from gripping ring | |
| CN113148255A (en) | Integrated packing device and control method thereof | |
| CN112340349A (en) | But ton bag recycle throws material device | |
| CN219093087U (en) | Device for rigidly burying hazardous waste landfill bulk density |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210413 |
|
| RJ01 | Rejection of invention patent application after publication |