CN201262609Y - Venting quality test fixture, tester and test system - Google Patents
Venting quality test fixture, tester and test system Download PDFInfo
- Publication number
- CN201262609Y CN201262609Y CNU2008203006480U CN200820300648U CN201262609Y CN 201262609 Y CN201262609 Y CN 201262609Y CN U2008203006480 U CNU2008203006480 U CN U2008203006480U CN 200820300648 U CN200820300648 U CN 200820300648U CN 201262609 Y CN201262609 Y CN 201262609Y
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- concave surface
- hole
- tester
- air permeability
- gas
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Abstract
The utility model discloses a permeability test fixture, a tester and a test system, wherein, the permeability test fixture comprises an upper die (30), a lower die (31) and a cylinder (27); a through-hole (47) is opened in the middle of the upper die (30); the other end of the through-hole (47) is connected with a cavity (45) which is provided with thread at the inner wall by a locknut fast insert (24); the upper surface of the lower die (31) is provided with a first concave surface (44) which is opened with a through-hole (39) in the middle; the other end of the through-hole (39) is connected with a cavity (37) which is provided with thread at the inner wall by the locknut fast insert (24); the outer side of the first concave surface (44) is provided with a second concave surface (41), on which an O-shaped seal ring (40) is arranged; and the upper die (30) is connected with the cylinder (27) by a pressure rod (23). The permeability tester and the test system both comprise the test fixtures. The utility model has the advantages of easy operation, simplicity, convenience and the like.
Description
Technical field
The utility model relates to a kind of gas penetration potential test fixture, tester and test macro.
Background technology
Proton Exchange Membrane Fuel Cells (Proton Exchange Membrane Fuel Cell.PEMFC) be as after alkaline fuel cell (AFC), phosphoric acid fuel cell (PAFC), molten carbonate fuel cell (MCFC) and Solid Oxide Fuel Cell (SOFC), grow up the 5th generation fuel cell.Owing to adopted the solid electrolyte polymeric membrane as electrolyte, therefore have characteristics such as the startup of energy conversion rate high and low temperature, no electrolyte leakage, also therefore be acknowledged as the first-selected ideal source that promises to be space flight, military affairs, transportation and portable standby power supply most.
Gas diffusion layers is the important component part of Proton Exchange Membrane Fuel Cells, and it is made up of conductive porous material, plays vital role such as supporting Catalytic Layer, collected current, drainage water and conduction gas.For good water, gas transmission channel is provided, gas diffusion layers need carry out hydrophobic treatments.Air permeability is one of important characterization parameter of gas diffusion layers.The porosity of gas diffusion layers is generally more than 70% at present, and gas penetration potential is very good, and available on the market air permeability testing apparatus, except costing an arm and a leg, outside testing expense is higher, generally adopt the mode air feed of cylinder or vacuum pump, not too be fit to the air permeability test of high Air permenbility material.
The utility model content
The purpose of this utility model provides a kind of gas penetration potential test fixture, has easy operating, characteristics such as simple, convenient.
Another purpose of the present utility model provides a kind of air permeability tester.
Another purpose of the present utility model provides a kind of gas penetration potential test macro.
Its concrete technical scheme is as follows: a kind of gas penetration potential test fixture comprises upper die and lower die and cylinder, opens a through hole in the middle of the wherein said patrix, and the through hole other end is connected by the lock Female Push with the cavity that inwall is provided with screw thread; Described counterdie upper surface is provided with first concave surface, opens a through hole in the middle of first concave surface, and the through hole other end is connected by the lock Female Push with the cavity that inwall is provided with screw thread, and described first concave surface outside is provided with second concave surface, which is provided with the O RunddichtringO; Described patrix is connected with cylinder by press rods.Described counterdie is provided with the O RunddichtringO, can prevent the ovfl of gas from testing sample.
Described through hole can be a right angle pylone.
Described first concave surface can be circular concave surface, and described second concave surface can be a loop concave; Be provided with an annular boss between described first concave surface and second concave surface, its relative first concave surface and the high certain size of second concave surface.
Described patrix and counterdie surfacing, after the upper and lower mould butt joint, the corresponding butt joint of described through hole coincide, and exerts pressure by cylinder and realizes the sealing of anchor clamps.
A kind of air permeability tester comprises support and is located at pressure tester, flow tester and test fixture on the support, all is connected by gas circuit between wherein said test fixture and pressure tester and the flow tester; Wherein said test fixture comprises upper die and lower die and cylinder, opens a through hole in the middle of the described patrix, and the through hole other end is connected by the lock Female Push with the cavity that inwall is provided with screw thread; Described counterdie upper surface is provided with first concave surface, opens a through hole in the middle of first concave surface, and the through hole other end is connected by the lock Female Push with the cavity that inwall is provided with screw thread, and described first concave surface outside is provided with second concave surface, which is provided with the O RunddichtringO; Described patrix is connected with cylinder by press rods.
Described pressure tester can be precision pressure gauge, differential pressure type tensimeter or pressure transducer, described flow tester is mass flowmeter or flow sensor, it is fixed on the support by the nut adapter, and makes its gas access towards the support outside, connects to make things convenient for gas circuit.
Also be provided with ordinarily manometer, manual reduction valve and solenoid valve on the described support, it is fixed on the support by bolt or nut.
Described solenoid valve links to each other with power lead by lead, and is provided with power switch in the circuit, is used for solenoid valve is controlled.
Described solenoid valve is connected with external gas circuit, constitutes pipeline one, and described manual reduction valve is connected with external gas circuit, constitutes pipeline two.
Solenoid valve in the described pipeline one is a five-way electromagnetic valve, is used for the lifting of control cylinder and press rods.
Described five-way electromagnetic valve comprises the gas access that is connected with external gas circuit, what be connected with the rise pipeline of cylinder often opens the road, the electric power starting path that is connected with the landing pipeline of cylinder and two relief ports, the release when being used for solenoid valve conversion airflow direction; The variation of the airflow direction by solenoid valve pressure, thus carry out the unlatching and the closure of test fixture upper and lower mould.
Described two relief ports connect by flexible pipe, and described flexible pipe is provided with aperture, can control the unlatching and the closing speed of test fixture like this, the opening speed that prevents upper and lower mould is too fast, the quantity of described aperture is decided according to the experiment situation, the quantity of aperture is many more, and then the folding speed of test fixture is fast more.
In the described pipeline two, the gas feed of described manual reduction valve is connected with external gas circuit, and its gas vent is connected with Through solenoid valve, prolongs with flexible pipe then; The place is provided with a threeway at the test fixture counterdie, and an end of threeway is connected with the lock Female Push of counterdie, and the other end is connected with precision pressure gauge, is used to gather gaseous tension; The place also is provided with a threeway at the test fixture patrix, and it links to each other with the lock Female Push, an end of threeway and linking to each other of mass flowmeter, and the other end is connected with precision pressure gauge.Gas flows out from the patrix through hole through after the specimen after the upper and lower mould closure, emptying after mass flowmeter is gathered flow parameter.
A kind of gas penetration potential test macro comprises air permeability tester and measurement and control unit thereof, between wherein said measurement and control unit and the air permeability tester for being electrically connected; Wherein comprise test fixture in the air permeability tester, described test fixture comprises upper die and lower die and cylinder, opens a through hole in the middle of the described patrix, and the through hole other end is connected by the lock Female Push with the cavity that inwall is provided with screw thread; Described counterdie upper surface is provided with first concave surface, opens a through hole in the middle of first concave surface, and the through hole other end is connected by the lock Female Push with the cavity that inwall is provided with screw thread, and described first concave surface outside is provided with second concave surface, which is provided with the O RunddichtringO; Described patrix is connected with cylinder by press rods.
Described measurement and control unit comprises control section, signals collecting part, data processing section and output as a result.
Described control section is connected with solenoid valve and pressure tester respectively, is used for the break-make of control system gas circuit; Also be provided with the mould open/close controller between described control section and the pressure tester, be used for the folding of tester.
The utility model permeates law according to darcy, and the fixed gas diffusion layer feeds the air of certain pressure in gas diffusion layers one side, and measures the air mass flow of passing through at opposite side with air flow meter, thereby calculates the air permeability of gas diffusion layers.For the gas diffusion layers that different process is handled, the test area of fixed sample, by comparing under the certain pressure difference, the size of air mass flow just can compare its air permeability performance.Under equal pressure, air mass flow is big more, and air permeability is big more.Also can permeate law by darcy, calculate gas permeability coefficient accurately, whole test process is simple, has practicality.Wherein darcy infiltration law is:
Wherein V is the volumetric flow rate in the unit interval, k
dBe the darcy infiltration coefficient, α is the cross-sectional area that gas passes through, and μ is the gas viscosity, and l is a thickness of sample, and Δ P falls for the sample pressure at two ends.
Because μ is a constant, definition K=k
d/ μ characterizes the gas penetration potential of gas diffusion layers, and formula (1) can be converted into:
Compared with prior art, air permeability tester of the present utility model is simple to operate, and is fast, convenient.
Description of drawings
Fig. 1 is the total figure of the utility model gas penetration potential test fixture assembling;
Fig. 2 is the utility model gas penetration potential test fixture wiring layout;
Fig. 3 is the utility model gas penetration potential test fixture counterdie cut-open view;
Fig. 4 is the utility model gas penetration potential test fixture counterdie cut-open view;
Fig. 5 is the utility model gas penetration potential test fixture counterdie vertical view;
Fig. 6 is the utility model gas penetration potential test fixture patrix cut-open view;
Fig. 7 is the utility model air permeability tester front wiring layout;
Fig. 8 is the utility model air permeability tester back side wiring layout;
Fig. 9 is the pipeline distribution plan of solenoid valve of the present utility model;
Figure 10 is the utility model gas penetration potential test macro synoptic diagram.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail, but is not limited to the content of present embodiment.
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and shown in Figure 6, a kind of gas penetration potential test fixture comprises cylinder 27, patrix 30 and counterdie 31, and a through hole 47 is opened in the centre of wherein said patrix 30, through hole 47 other ends link to each other with the cavity 45 that inwall is provided with screw thread, are used for installing lock Female Push 24; And the lower surface of described patrix 30 is except that through hole 47, surfacing; Described counterdie 31 upper surfaces are provided with circular concave surface 44, open a through hole 39 in the middle of it, and through hole 39 other ends link to each other with lock Female Push 25 with cavity 37 places that inwall is provided with screw thread; There is a loop concave 41 in circular concave surface 44 outsides, which is provided with O RunddichtringO 40, and described patrix 30 is connected with cylinder 27 by press rods 23; The upper surface of described counterdie 31 is except that concave surface 44 and O-ring seal 40, and the surface is very smooth and very identical with the lower surface of patrix 30 on the whole, and after last lower clamp 30,31 butt joints, through hole joins, and realizes the sealing of anchor clamps by cylinder 27 application of forces.
According to assembling mode from bottom to top, 4 highly consistent supporting legs 33 at first are installed on base plate 26, and tighten with four nuts 32 respectively, with the mounting hole 42 of four bolts counterdie 31 is fixed on the base plate then by described counterdie 31, the connecting link 35 of four length unanimities is installed again, with nut 36 top board 22 and base plate is fixed on the connecting link afterwards.Again four bolts 28 of cylinder 27 usefulness are fixed on the top board, at last the press rods 23 of described patrix 30 by cylinder 27 connected, during connection, on press rods, be screwed into earlier a nut 29, again press rods is screwed in the internal thread 46 of patrix, last fastening nut 29 is downwards finished the installation of whole gas penetration potential test fixture.After the installation, the tightness degree with between high precision height gauge and the clearance gauge measurement upper and lower mould if the slit of two intermodes is bigger, then needs to process again web member.Convenient for gas circuit is installed, can on upper and lower mould, be screwed into two lock Female Push 37 and 45 earlier.
As shown in Figure 7 and Figure 8, a kind of air permeability tester, comprise support 1 and be located at two precision pressure gauges 2 on the support 1, (Beijing Qixing Huachuang Electronics Co., Ltd produces mass flowmeter 7, it comprises mass flow controller 11) and test fixture, be connected by gas circuit between wherein said test fixture and the precision pressure gauge 2, be connected by data line between described test fixture and the mass flowmeter 7, the two is structure as a whole.
During installation, mass flowmeter 7 is fixed on the support 1 with four bolts 5; The bolt 18 of three unanimities of ordinarily manometer 19 usefulness is fixing; The swing handle of manual reduction valve 14 is installed on the support 1 from inside to outside, fixes with the nut that self attaches; Two precision pressure gauges 2 are fixed on the support 1 by nut adapter 10, and make the gas access 6 of the precision pressure gauge 2 on the adapter 10 towards support 1 outside; After power switch 15,16 welded two power leads 51 respectively, directly snap in support and get final product from support 1 front.
After each main part had connected, the beginning gas circuit connected, and external gas circuit is connected to form pipeline one and pipeline two with solenoid valve 3 and manual reduction valve 14 respectively.
Solenoid valve 3 in the pipeline one is a five-way road solenoid valve, is used for the lifting of the press rods 23 of control cylinder 27, as shown in Figure 9.Pipeline one is connected with the gas access 53 of solenoid valve 3, often opens road 49 through solenoid valve and links to each other with the press rods rise pipeline 21 of press cylinder, and the electric power starting path 50 of solenoid valve 3 then links to each other with the press rods landing pipeline 20 of press cylinder.The upper and lower mould of closed specimen anchor clamps is opened in the variation of the airflow direction by solenoid valve 3 pressure.And the release of the relief port 52 and 54 of solenoid valve 3 when being used for solenoid valve conversion airflow direction, and be connected with 54 52 with flexible pipe, wherein flexible pipe is provided with aperture.After installing pipeline, solenoid valve 3 usefulness bolts 4 are fixed on the support get final product.
In pipeline two, at first external gas circuit is connected with the gas feed 12 of manual reduction valve 14, producing the back by gas vent 13 links to each other with Through solenoid valve 9, after prolonging with flexible pipe then, a threeway is installed before the gas access of test fixture counterdie 31, one end of threeway links to each other with the lock Female Push 25 of counterdie 31, the other end of threeway is connected with the gas access 6 of precision pressure gauge 2, also link to each other with lock Female Push 25 at described patrix 30 places with a threeway, one end of threeway links to each other with the gas access 8 of mass rate 7, gas is after the upper and lower mould closure, through from patrix through hole 47, flowing out after the specimen, and the mass flowmeter of flowing through, gather flow parameter after 17 emptyings of its gas vent, the other end of threeway is connected with precision pressure gauge 2 and gets final product.So far the gas circuit of finishing whole testing tool connects.
At last, the power lead 51 that directly adopts mass flowmeter uses from this extracting power supply cord duplex feeding magnet valve 3 as power supply, power switch 15 is used for control electromagnetic valve 3, wherein when solenoid valve 3 was in off-position, the described patrix 30 in ventilation back rose, described patrix 30 closures in energising back.And power switch 16 is used to control Through solenoid valve 9, closed electromagnetic valve during no power, and the energising rear electromagnetic valve is opened, and to test fixture counterdie 31 air feed, and tests.
As shown in figure 10, a kind of gas penetration potential test macro comprises air permeability tester and measurement and control unit thereof, between wherein said measurement and control unit and the air permeability tester for being electrically connected.
Described measurement and control unit comprises control section, signals collecting part, data processing section and output as a result.
Described control section is connected with solenoid valve and pressure tester respectively; Also be provided with the mould open/close controller between described control section and the pressure tester.
Gas penetration potential test macro of the present utility model in use, power switch 15,16 with air permeability tester places off state earlier, the pressure of adjusting manual reduction valve 14 is minimum, again the tester gas circuit is connected on the gas dispense station, and adjustment pressure is 0.3Mpa, at this moment described patrix 30 can rise automatically, opens the power supply of mass flowmeter 7 at last.
Carbon paper to be measured is cut into Φ 10mm size, and in the circular concave surface 44 of the described counterdie 31 of packing into, wherein the diameter of through hole 39 is Φ 6mm.Press power switch 15 then, behind the closed described upper and lower mould, press power switch 16, open Through solenoid valve 9, adjust the pressure of manual solenoid valve 14 simultaneously, till the numerical value on two precision pressure gauges 2 reaches test request, for the reappearance that guarantees each test can be used manual time-keeping, time set is 1min, and detected gas is an air.Force value during record 1min, and get its difference, the gas flow by mass flowmeter 7 is gathered by sample obtains the gas stream value under the different pressure reduction; If not high to the air permeability accuracy requirement, can adjust to same pressure after, only write down gas flow and get final product, under equal pressure, gas flow is big more, then air permeability is high more.Carry out data processing at last, input test thickness of sample in data processing unit calculates according to permeating law with darcy more earlier, and finally in output unit output result.
But; gas penetration potential test fixture described in the utility model, tester and test macro are not limited to the content of the foregoing description, and every embodiment that is suitable for gas penetration potential test fixture described in the utility model, tester and test macro all drops within the protection domain of the present utility model.
Claims (14)
- [claim 1] a kind of gas penetration potential test fixture, comprise patrix (30), counterdie (31) and cylinder (27), it is characterized in that opening a through hole (47) in the middle of the described patrix (30), through hole (47) other end is connected by lock Female Push (24) with the cavity (45) that inwall is provided with screw thread; Described counterdie (31) upper surface is provided with first concave surface (44), open a through hole (39) in the middle of first concave surface (44), through hole (39) other end is connected by lock Female Push (24) with the cavity (37) that inwall is provided with screw thread, described first concave surface (44) outside is provided with second concave surface (41), which is provided with O RunddichtringO (40); Described patrix (30) is connected with cylinder (27) by press rods (23).
- [claim 2] gas penetration potential test fixture according to claim 1 is characterized in that described through hole (47) and through hole (39) are right angle pylones.
- [claim 3] gas penetration potential test fixture according to claim 1 is characterized in that described first concave surface (44) is circular concave surface, and described second concave surface (41) is a loop concave; Be provided with an annular boss (43) between described first concave surface (44) and second concave surface (41), its relative first concave surface (44) and the high certain size of second concave surface (41).
- [claim 4] a kind of air permeability tester, comprise support and be located at pressure tester (2), flow tester (7) and test fixture on the support (1), it is characterized in that all being connected between described test fixture and pressure tester (2) and the flow tester (7) by gas circuit; Wherein said test fixture comprises patrix (30), counterdie (31) and cylinder (27), opens a through hole (47) in the middle of the described patrix (30), and through hole (47) other end is connected by lock Female Push (24) with the cavity (45) that inwall is provided with screw thread; Described counterdie (31) upper surface is provided with first concave surface (44), open a through hole (39) in the middle of first concave surface (44), through hole (39) other end is connected by lock Female Push (24) with the cavity (37) that inwall is provided with screw thread, described first concave surface (44) outside is provided with second concave surface (41), which is provided with O RunddichtringO (40); Described patrix (30) is connected with cylinder (27) by press rods (23).
- [claim 5] air permeability tester according to claim 4 is characterized in that described pressure tester (2) is precision pressure gauge, differential pressure type tensimeter or pressure transducer, and it is fixed on the support (1) by nut adapter (10).
- [claim 6] air permeability tester according to claim 4 is characterized in that described flow rate test is mass flowmeter or flow sensor.
- [claim 7] air permeability tester according to claim 4 is characterized in that described support (1) is provided with ordinarily manometer (19), manual reduction valve (14) and solenoid valve (3), and it is fixed on the support (1) by bolt or nut.
- [claim 8] air permeability tester according to claim 7 is characterized in that described solenoid valve (3) is connected with external gas circuit respectively with manual reduction valve (14), constitutes pipeline one and pipeline two.
- [claim 9] air permeability tester according to claim 8, it is characterized in that the solenoid valve (3) in the described pipeline one is a five-way electromagnetic valve, comprise the gas access (53) that is connected with external gas circuit, what be connected with the rise pipeline (21) of cylinder (27) often opens road (49), the electric power starting path (50) and two relief ports (52) and (54) that are connected with the landing pipeline (20) of cylinder (27).
- [claim 10] air permeability tester according to claim 9 it is characterized in that described two relief ports (52) are connected by flexible pipe with (54), and described flexible pipe is provided with aperture.
- [claim 11] air permeability tester according to claim 10, it is characterized in that in the described pipeline two, the gas feed (12) of described manual reduction valve (14) is connected with external gas circuit, and its gas vent (13) is connected with Through solenoid valve (9).
- [claim 12] a kind of gas penetration potential test macro is characterized in that comprising air permeability tester and measurement and control unit thereof, between wherein said measurement and control unit and the air permeability tester for being electrically connected; Wherein comprise test fixture in the air permeability tester, described test fixture comprises patrix (30), counterdie (31) and cylinder (27), open a through hole (47) in the middle of the described patrix (30), through hole (47) other end is connected by lock Female Push (24) with the cavity (45) that inwall is provided with screw thread; Described counterdie (31) upper surface is provided with first concave surface (44), open a through hole (39) in the middle of first concave surface (44), through hole (39) other end is connected by lock Female Push (24) with the cavity (37) that inwall is provided with screw thread, described first concave surface (44) outside is provided with second concave surface (41), which is provided with O RunddichtringO (40); Described patrix (30) is connected with cylinder (27) by press rods (23).
- [claim 13] gas penetration potential test macro according to claim 12 is characterized in that described measurement and control unit comprises control section, signals collecting part, data processing section and output as a result.
- [claim 14] gas penetration potential test macro according to claim 13 is characterized in that described control section is connected with solenoid valve and pressure tester respectively; Be provided with the mould open/close controller between described control section and the pressure tester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203006480U CN201262609Y (en) | 2008-04-30 | 2008-04-30 | Venting quality test fixture, tester and test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203006480U CN201262609Y (en) | 2008-04-30 | 2008-04-30 | Venting quality test fixture, tester and test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201262609Y true CN201262609Y (en) | 2009-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008203006480U Expired - Lifetime CN201262609Y (en) | 2008-04-30 | 2008-04-30 | Venting quality test fixture, tester and test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201262609Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571472B (en) * | 2008-04-29 | 2012-07-11 | 汉能科技有限公司 | Air permeability test fixture, tester and test system |
| CN109801647A (en) * | 2019-04-04 | 2019-05-24 | 苏州必威物流装备有限公司 | A kind of CD ferry-boat equipment |
| CN110132819A (en) * | 2019-06-11 | 2019-08-16 | 苏州宝明高温陶瓷有限公司 | The ventilative amount detecting device of the ventilative material sample block of filling pipe end |
-
2008
- 2008-04-30 CN CNU2008203006480U patent/CN201262609Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571472B (en) * | 2008-04-29 | 2012-07-11 | 汉能科技有限公司 | Air permeability test fixture, tester and test system |
| CN109801647A (en) * | 2019-04-04 | 2019-05-24 | 苏州必威物流装备有限公司 | A kind of CD ferry-boat equipment |
| CN109801647B (en) * | 2019-04-04 | 2023-11-03 | 苏州必威物流装备有限公司 | Optical disk ferrying equipment |
| CN110132819A (en) * | 2019-06-11 | 2019-08-16 | 苏州宝明高温陶瓷有限公司 | The ventilative amount detecting device of the ventilative material sample block of filling pipe end |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HANERGY SOLAR PHOTOVOLTAIC TECHNOLOGY LIMITED Free format text: FORMER NAME: HANERGY TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 100107 Beijing Chaoyang District Anli Road No. 0-A Patentee after: Hanenergy Solar Photovoltaic Technology Co.,Ltd Address before: 102209 Beijing city Changping District town Beiqijia Hongfu Pioneer Park No. 15 hospital Patentee before: Hanergy Technology Co., Ltd. |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Apollo Precision (Fujian) Limited Assignor: Hanenergy Solar Photovoltaic Technology Co.,Ltd Contract record no.: 2014990000329 Denomination of utility model: Air permeability test fixture, tester and test system Granted publication date: 20090624 License type: Exclusive License Record date: 20140521 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090624 |
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| CX01 | Expiry of patent term |