CN201965529U - Mobile internet device heat abstractor - Google Patents
Mobile internet device heat abstractor Download PDFInfo
- Publication number
- CN201965529U CN201965529U CN2011200656370U CN201120065637U CN201965529U CN 201965529 U CN201965529 U CN 201965529U CN 2011200656370 U CN2011200656370 U CN 2011200656370U CN 201120065637 U CN201120065637 U CN 201120065637U CN 201965529 U CN201965529 U CN 201965529U
- Authority
- CN
- China
- Prior art keywords
- heat
- mobile internet
- internet device
- conducting element
- absorbing sheet
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Landscapes
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model discloses a mobile internet device heat abstractor, which comprises a heat absorbing sheet, a cooling fin and a heat conducting element for connecting the heat absorbing sheet and the cooling fin, wherein the heat absorbing sheet and the cooling fin are fixedly installed on a mobile internet device body. The heat absorbing sheet is attached to a heating surface of a high power consumption component of a mobile internet device, the cooling fin is arranged at the position of an air vent of the mobile internet device, two ends of the heat conducting element are respectively a cold end and a hot end, the hot end of the heat conducting element is attached to the heat absorbing sheet through heat conduction materials, and the cold end of the heat conducting element is attached to the cooling fin through the heat conduction materials. The mobile internet device heat abstractor realizes the heat dissipation of a CPU (central processing unit) chip and a GPU (graphics processing unit) chip of the mobile internet device well through adopting the heat dissipation methods of liquid cooling or thermal conduction or combination of the liquid cooling and the thermal conduction, and dose not need a lot of funds and extra electric drive. Compared with ordinary air-cooling heat dissipation, the mobile internet device heat abstractor has the advantages of being small in volume, high in heat dissipation efficiency, simple in structure, easy in manufacture and strong in practical application.
Description
Technical field
The utility model relates to a kind of mobile electronic equipment heat abstractor, and particularly a kind of mobile internet device heat abstractor belongs to the Thermal Power Engineering technical field of electronic equipment.
Background technology
Along with development of computer, in recent years, mobile communication and internet become the two big business that the world today is with fastest developing speed, market potential is maximum, prospect is the most tempting.The all any forecaster's unanticipated of their growth rate arrives.So far, global mobile subscriber surpasses 1,500,000,000, and the Internet user has also exceeded 700,000,000.People sharply rise to the demand of movability and information, so mini notebook computer MID of a kind of new ideas that Intel releases in IDF conference in 2008, be Mobile Internet Device, mobile internet device, in the definition of Intel, this is a kind of volume less than the notes computer, but greater than the mobile Internet device of mobile phone.By MID, the user can enter the internet, enjoys amusement at any time, carries out operations such as information inquiry, mail transmission/reception.MID can support GPRS CDMA link, and introduce 802.11X(a/b/g/n), future is also with integrated WiMAX.
MID is in the starting developing stage at present, the CPU frequency of main flow MID equipment is mainly between 500MHz～1GHz at present, and the triangle throughput rate of GPU is between 8M～32M, and MID manufacturer does not generally take into account heat abstractor in the MID equipment and goes, because the restriction of hardware and design, the user generally is reflected in the slack-off even deadlock through constant velocity when seeing high-definition movie on the MID equipment or playing 3d gaming at present, this wherein also has is because MID equipment lacks effective heat dissipation design greatly, when operation calculated amount program bigger than normal a little, the heat that the equipment computing produces can't be discharged timely, thereby cause device rate slack-off, seemingly-dead, may reduce the serviceable life of MID equipment even can burn MID when serious.
The MID principal feature be portable, move to experience anywhere or anytime, so require this equipment to have that volume is little, battery is long service time, the more important thing is favorable user experience.MID equipment is equipped with radiator fan unlike desktop computer, notebook computer, heat radiator promotes the heat in the main frame to distribute.Present MID equipment does not install heat abstractor efficiently generally additional, only sticks aluminum alloy sheet on heater elements such as CPU, GPU chip, dispels the heat by the engineering plastics and the external world of fuselage, and the heat in the MID machine can't well distribute.If stiff will dispel the heat that wind looses, heat sink design is entered, need driven by power with having a strong impact on the overall volume of MID and weight and radiator fan tool, this also will reduce the battery service time of equipment.Along with the lifting and lightening, the portability development of MID equipment arithmetic speed, the MID heat dissipation problem is apparent more outstanding.
The utility model content
The technical problems to be solved in the utility model is to overcome above-mentioned defective, provide a kind of volume that is used for mobile internet device (MID) little, need not the heat abstractor that additional energy source drives, satisfy the heat radiation requirement of present MID level of hardware, and, still heat-sinking capability preferably can be arranged along with the continuous lifting of following CPU, GPU chip speed or the increase of high power consumption module thermal value.This heat abstractor not only can effectively reduce the working temperature of MID, prolongs the serviceable life of MID, and can promote user's experience, and the user in use can not use uncomfortable because of apparatus overheat.
For solving above technical matters, design of the present utility model is:
On the high power module of MID complete machine mainboard, as installing heat conducting element additional on CPU, the GPU, as adopting heat-pipe apparatus, vacuum heat interchanger and superconductor, radiating fin on an other termination of heat pipe is realized the heat radiation circulation of MID equipment by the heat transfer process of heat conducting element.Owing to adopt heat-pipe apparatus, vacuum heat interchanger to undergo phase transition heat absorption, phase transformation heat release in the heat radiation process, its capacity of heat transmission surpasses any metal.
For solving above technical matters, the technical scheme that the utility model is taked is as follows:
A kind of mobile internet device heat abstractor, comprise the heat absorbing sheet and the radiating fin that are fixedly installed on the mobile internet device body, also comprise the heat conducting element that connects heat absorbing sheet and radiating fin, heat absorbing sheet is fitted on the heating face of high power consumption device of mobile internet device, radiating fin is installed on the ventilating opening place of mobile internet device, the two ends of heat conducting element are respectively cold junction and hot junction, fit by Heat Conduction Material and heat absorbing sheet in the hot junction of heat conducting element, the cold junction of heat conducting element is fitted by Heat Conduction Material and radiating fin.
Above-mentioned heat conducting element is a heat pipe, and heat pipe comprises housing and is attached at imbibition core on the inwall of housing, actuating medium is housed in the heat pipe.
Actuating medium in the above-mentioned heat pipe is a methyl alcohol.
The case material of above-mentioned heat pipe is copper, aluminium, carbon steel or alloy steel.
The section of above-mentioned heat pipe is ellipse, rectangle or pancake.
The case material of above-mentioned heat pipe is preferably super oxygen-free copper.
As a kind of improvement of the present utility model, above-mentioned heat conducting element is the vacuum heat exchanger tube of closed at both ends, injects liquid distilled water in the vacuum heat exchanger tube, can absorb water and the breathable porosint near inserting in the cavity in its hot junction in the vacuum heat exchanger tube.
Above-mentioned porosint is a water-absorbing sponge.
As another improvement of the present utility model, above-mentioned heat conducting element is heat pipe, heat conduction bar, thermal conductive belt or heat-conducting block, and the material of heat conducting element is a superconductor.
Heat absorbing sheet in above-mentioned all technical schemes of the present utility model is fitted on the module heating face of the CPU of mobile internet device and GPU, preferably is connected a heat conducting element respectively with the heat absorbing sheet that CPU and GPU fit, and forms two heat conduction and heat radiation systems.
The utility model has following substantive distinguishing features and advantage compared with prior art:
1. this mobile internet device (MID) construction for heat radiating device is simple, practical, can significantly promote the heat-sinking capability in the MID equipment operation.
2. this MID heat abstractor need not extra driven by power in the process of heat radiation, the advantage that do not have radiator fan, have environmental protection, volume is little, heat radiation is stable, can well satisfy that the user surfs the Net at ordinary times on MID equipment, amusement, see high-definition movie, play games, the outstanding operating experience of mobile office.
3. when this MID heat abstractor adopted the vacuum heat exchanger tube to dispel the heat, heat conduction was fast, the radiating efficiency height, and low cost of manufacture is easy to industrialization.
Description of drawings
Fig. 1 is the external structure of mobile internet device.
Fig. 2 is the construction for heat radiating device decomposing schematic representation of the utility model first embodiment.
Fig. 3 is heat pipe structure and the fundamental diagram of the utility model first embodiment and second embodiment.
Fig. 4 is vacuum heat exchange tube structure and the fundamental diagram of the utility model the 3rd embodiment.
Fig. 5 is the structure and the heat conduction schematic diagram of the heat conduction bar of the utility model the 4th embodiment.
Fig. 6 is the cooling system layout structure synoptic diagram of the utility model the 5th embodiment.
Fig. 7 is the construction for heat radiating device figure of the utility model the 5th embodiment.
Embodiment
Preferred embodiment accompanying drawings of the present utility model is as follows:
Embodiment one:
Referring to Fig. 2 and Fig. 3, a kind of mobile internet device heat abstractor, comprise the heat absorbing sheet 4 and the radiating fin 6 that are fixedly installed on the mobile internet device body 1, also comprise the heat conducting element that connects heat absorbing sheet 4 and radiating fin 6, heat absorbing sheet 4 is fitted on the heating face of high power consumption device of mobile internet device, radiating fin 6 is installed on the ventilating opening place of mobile internet device, it is characterized in that: the two ends of heat conducting element are respectively cold junction and hot junction, fit by Heat Conduction Material and heat absorbing sheet 4 in the hot junction of heat conducting element, the cold junction of heat conducting element is fitted by Heat Conduction Material and radiating fin 6.Heat conducting element adopts heat pipe 7, heat pipe 7 to comprise housing 8 and is attached at imbibition core 9 on the inwall of housing 8, in the heat pipe 7 actuating medium is housed.That mobile internet device (MID) generally has is frivolous, integrated level is high, main devices is powerful, and the nucleus module heating such as concentrates at characteristics.Referring to Fig. 1, the main function components of mobile internet device (MID) is encapsulated in the shell of mobile internet device body 1, and liquid crystal display 2 and control panel are installed on shell, and control panel is integrated in the liquid crystal display 2, can adopt touch liquid crystal display 2.The volume of MID complete machine is less to have caused the free space in its shell very little, and air flow is not smooth, can not form optimum air heat radiation flow field, like this, installs the design problem that heat abstractor efficiently will fully take into account the complete machine physical arrangement additional on MID equipment.Heat pipe is the fabulous super heat conducting element of a kind of heat-conducting effect, and the capacity of heat transmission surpasses hundreds of times even thousands of times of copper.It can be at small temperature range internal reaction, and the Temperature Distribution of regulating length direction is automatically promptly transmitted heat, often is considered to the isothermal element.As if the cooling system that hot pipe technique is applied to above-mentioned mobile internet device, will improve the radiating effect of mobile internet device undoubtedly, thus the job stability and the device lifetime of improving mobile internet device.This mobile internet device (MID) heat dissipation design scheme has been introduced heat pipe technology, can significantly promote the heat-sinking capability in the MID equipment operation, this MID heat abstractor need not extra driven by power in the process of heat radiation, the advantage that do not have radiator fan, have environmental protection, volume is little, heat radiation is stable, can well satisfy that the user surfs the Net at ordinary times on MID equipment, amusement, see high-definition movie, play games, the outstanding operating experience of mobile office.
Actuating medium in the above-mentioned heat pipe 7 is a methyl alcohol.Methyl alcohol has low, the volatile and specific heat capacity of boiling point than characteristics such as height, can pass through phase-change thermal storage, carry the heat rapid diffusion, carrying out the heat that processes such as heat interchange distribute the power consumption element of mobile internet device fast in time discharges to device external, the utility model dispels the heat based on liquid cooling, can realize significant radiating effect.
The case material of above-mentioned heat pipe 7 is copper, aluminium, carbon steel or alloy steel.
The section of above-mentioned heat pipe 7 is ellipse, rectangle or pancake.Adopt the heat pipe of these shape tube structures can save the space, have the equal exchange capability of heat of standard round cast heat pipe.
Embodiment two:
Referring to Fig. 3, the technical scheme of present embodiment and embodiment one is basic identical, and difference is:
The case material of heat pipe 7 is super oxygen-free copper.Adopt super oxygen-free copper, can carry out complex heat transfer, super oxygen-free copper is close to does not have thermal resistance, can be quickly the heat in hot junction be transmitted to cold junction by heat conduction, in conjunction with the thermal energy transfer mode of heat pipe heat exchanging, can conduct heat better simultaneously.
Embodiment three:
Referring to Fig. 4, the technical scheme of present embodiment and embodiment one and embodiment two is basic identical, and difference is:
Heat conducting element is the vacuum heat exchanger tube 10 of closed at both ends, and vacuum heat exchanger tube 10 injects liquid distilled water, can absorb water and breathable porosint 11 near inserting in the cavity in its hot junction in the vacuum heat exchanger tube.Porosint can adopt water-absorbing sponge.On the high power consumption device of MID complete machine mainboard, install vacuum heat exchanger tube 10 devices additional, in pipe, inject a spot of liquid distilled water, and will vacuumize in the pipe, in the vacuum heat exchanger tube 10 at the contacted heat absorbing sheet of the high power consumption device of distance 4 places, insert water-absorbing sponge, radiating fin 6 on an other termination of vacuum heat exchanger tube 10.When high power consumption device is worked, heat absorbing sheet 4 absorbs heat from high power consumption device, owing to vacuumize in the pipe, water boiling point in the conduit is extremely low, when hydrone absorbs heat, hydrone is vaporous water steam from the liquid phase-change distillation, when water vapour arrives the radiating fin 6 that vacuum heat exchanger tube 10 far-ends link to each other, because radiating fin 6 contacts with outside air, temperature is lower, thereby make water vapour heat release liquefaction be liquid water, liquid water returns in pipe again near radiating fin 6 places, thereby realizes the heat radiation circulation of MID equipment.Owing to undergo phase transition heat absorption, phase transformation heat release in the heat radiation process, the capacity of heat transmission of vacuum heat exchanger tube 10 surpasses any metal, also be better than general heat pipe, 10 heat radiations of vacuum heat exchanger tube are that compared with the advantage of traditional heat-dissipating heat conduction is fast, the general heat pipe radiating principle is still air-cooled, so still there is not the liquid cooling heat-sinking capability strong generally speaking.
Embodiment four:
Referring to Fig. 5, the technical scheme of present embodiment and embodiment one, embodiment two and embodiment three is basic identical, and difference is:
Heat conducting element is centreless heat pipe, heat conduction bar, thermal conductive belt or heat-conducting block, and the material of heat conducting element is a superconductor.Adopt superconductor to be to reduce heat conducting thermal resistance, improve the heat flux of heat conducting element unit cross-sectional area, improve the heat-sinking capability of cooling system.
Embodiment five:
Referring to Fig. 6 and Fig. 7, the technical scheme of present embodiment and embodiment one, embodiment two, embodiment three and embodiment four is basic identical, and difference is:
Heat absorbing sheet 4 is fitted in the CPU(3 of mobile internet device) and module heating face GPU(5) on, be connected a heat conducting element respectively with the heat absorbing sheet 4 that CPU and GPU fit, form two heat conduction and heat radiation systems.In the present embodiment, CPU(3 in mobile internet device) two heat pipe heat dissipation design that embedded a kind of non-radiator fan drives and on module heating face GPU(5), be and on the basis of single channel heat dissipation channel, set up the backflow heat conducting element, as the heat pipe that refluxes, thereby form the cycle heat exchange loop.Present embodiment is directed under the situation that present MID equipment generally lacks efficiently radiates heat design, propose a kind of CPU, GPU chip operation temperature that can effectively reduce mobile internet device, improve the scheme in stability, operation efficiency and the serviceable life of mobile internet device.Because the effective heat that CPU, the GPU of mobile internet device are produced of this device distributes, the user can be good at promoting serviceable life and the stability in use of experiencing comfort level and improving MID equipment in operating process.
In conjunction with the accompanying drawings the utility model embodiment is compared detailed explanation above, but the utility model is not limited to the foregoing description, can also makes multiple variation according to the purpose that the present utility model is created.Meet any combination, increase that this mobile internet device heat abstractor technical scheme design done, revise, be equal to replacement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. mobile internet device heat abstractor, comprise the heat absorbing sheet (4) and the radiating fin (6) that are fixedly installed on the mobile internet device body (1), also comprise the heat conducting element that connects described heat absorbing sheet (4) and radiating fin (6), described heat absorbing sheet (4) is fitted on the heating face of high power consumption device of described mobile internet device, described radiating fin (6) is installed on the ventilating opening place of described mobile internet device, it is characterized in that: the two ends of described heat conducting element are respectively cold junction and hot junction, fit by Heat Conduction Material and described heat absorbing sheet (4) in the hot junction of described heat conducting element, the cold junction of described heat conducting element is fitted by Heat Conduction Material and described radiating fin (6).
2. mobile internet device heat abstractor according to claim 1, it is characterized in that, described heat conducting element is heat pipe (7), and described heat pipe (7) comprises housing (8) and be attached at imbibition core (9) on the inwall of described housing (8) that described heat pipe is equipped with actuating medium in (7).
3. mobile internet device heat abstractor according to claim 2 is characterized in that, the actuating medium in the described heat pipe (7) is a methyl alcohol.
4. mobile internet device heat abstractor according to claim 3 is characterized in that, the case material of described heat pipe (7) is copper, aluminium, carbon steel or alloy steel.
5. mobile internet device heat abstractor according to claim 3 is characterized in that, the section of described heat pipe (7) is ellipse, rectangle or pancake.
6. mobile internet device heat abstractor according to claim 4 is characterized in that, the case material of described heat pipe (7) is super oxygen-free copper.
7. mobile internet device heat abstractor according to claim 1, it is characterized in that, described heat conducting element is the vacuum heat exchanger tube (10) of closed at both ends, in described vacuum heat exchanger tube (10), inject liquid distilled water, can absorb water and breathable porosint (11) near inserting in the cavity in its hot junction in the described vacuum heat exchanger tube.
8. mobile internet device heat abstractor according to claim 7 is characterized in that, described porosint is a water-absorbing sponge.
9. mobile internet device heat abstractor according to claim 1 is characterized in that, described heat conducting element is centreless heat pipe, heat conduction bar, thermal conductive belt or heat-conducting block, and the material of described heat conducting element is a superconductor.
10. according to the described mobile internet device heat abstractor of any claim in the claim 1～9, it is characterized in that, described heat absorbing sheet (4) is fitted in the CPU(3 of described mobile internet device) and module heating face GPU(5) on, with described CPU(3) with GPU(5) heat absorbing sheet (4) that fits is connected a heat conducting element respectively, forms two heat conduction and heat radiation systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200656370U CN201965529U (en) | 2011-03-14 | 2011-03-14 | Mobile internet device heat abstractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200656370U CN201965529U (en) | 2011-03-14 | 2011-03-14 | Mobile internet device heat abstractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201965529U true CN201965529U (en) | 2011-09-07 |
Family
ID=44528076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200656370U Expired - Fee Related CN201965529U (en) | 2011-03-14 | 2011-03-14 | Mobile internet device heat abstractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201965529U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014086152A1 (en) * | 2012-12-07 | 2014-06-12 | 中兴通讯股份有限公司 | Heat radiation apparatus of terminal |
| WO2017008559A1 (en) * | 2015-07-14 | 2017-01-19 | 广东欧珀移动通信有限公司 | Mainboard heat dissipation structure and mobile terminal |
| CN106535565A (en) * | 2016-10-26 | 2017-03-22 | 维沃移动通信有限公司 | Heat dissipation structure of mobile terminal and mobile terminal |
| CN107912008A (en) * | 2017-12-28 | 2018-04-13 | 西安富凯能源科技有限责任公司 | A kind of integrated circuit heat dissipation device based on pulsating heat pipe |
| CN111280576A (en) * | 2018-12-29 | 2020-06-16 | 深圳光启超材料技术有限公司 | Heat radiator for intelligence helmet |
-
2011
- 2011-03-14 CN CN2011200656370U patent/CN201965529U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014086152A1 (en) * | 2012-12-07 | 2014-06-12 | 中兴通讯股份有限公司 | Heat radiation apparatus of terminal |
| WO2017008559A1 (en) * | 2015-07-14 | 2017-01-19 | 广东欧珀移动通信有限公司 | Mainboard heat dissipation structure and mobile terminal |
| CN106535565A (en) * | 2016-10-26 | 2017-03-22 | 维沃移动通信有限公司 | Heat dissipation structure of mobile terminal and mobile terminal |
| CN106535565B (en) * | 2016-10-26 | 2019-04-12 | 维沃移动通信有限公司 | A kind of mobile terminal radiator structure and mobile terminal |
| CN107912008A (en) * | 2017-12-28 | 2018-04-13 | 西安富凯能源科技有限责任公司 | A kind of integrated circuit heat dissipation device based on pulsating heat pipe |
| CN111280576A (en) * | 2018-12-29 | 2020-06-16 | 深圳光启超材料技术有限公司 | Heat radiator for intelligence helmet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201965529U (en) | Mobile internet device heat abstractor | |
| CN204406296U (en) | Water-cooling cabinet | |
| CN207780708U (en) | A kind of server liquid-cooling heat radiator | |
| CN103699194A (en) | Server and server host | |
| CN209167981U (en) | A kind of big data server with radiator | |
| CN203040101U (en) | Water cooling device used for cooling electronic device | |
| CN208819163U (en) | A kind of computer motherboard radiator | |
| CN106132177A (en) | A kind of cooling system of inverter | |
| CN205921887U (en) | Cooling system of dc -to -ac converter | |
| CN207067879U (en) | A kind of mainframe computer water cooled heat radiating case | |
| TW201229451A (en) | Heat circle system | |
| CN207487103U (en) | A kind of radiator | |
| CN201212970Y (en) | Water cooling and heat radiating system for personal high performance computer | |
| CN204065990U (en) | Heating radiator | |
| CN201917860U (en) | Computer mainboard allowing heat dissipation by passive heat dissipating mode | |
| CN207799606U (en) | A kind of computer high-efficiency water cooling cooling system | |
| CN202855872U (en) | Phase transition microemulsion heat spreading system | |
| CN208834248U (en) | A kind of computer server radiator of good heat dissipation effect | |
| CN208888746U (en) | It is a kind of to improve device by the human thermal comfort of heat source of computer heat dissipation | |
| CN214409866U (en) | Stable server for storing Chinese garden historic building database | |
| CN204883578U (en) | Computer second grade liquid cooling system | |
| CN206421311U (en) | A kind of parallel CPU heat radiation cooling devices | |
| CN2512023Y (en) | Liquid circulating cooling radiator for computer | |
| CN205450900U (en) | Overall arrangement of water -cooling all -in -one inner structure | |
| CN108762443A (en) | A kind of T-type radiator applied to computer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110907 Termination date: 20120314 |