CN201253524Y - Honeycomb type air cleaner filter-core - Google Patents
Honeycomb type air cleaner filter-core Download PDFInfo
- Publication number
- CN201253524Y CN201253524Y CNU2008200264194U CN200820026419U CN201253524Y CN 201253524 Y CN201253524 Y CN 201253524Y CN U2008200264194 U CNU2008200264194 U CN U2008200264194U CN 200820026419 U CN200820026419 U CN 200820026419U CN 201253524 Y CN201253524 Y CN 201253524Y
- Authority
- CN
- China
- Prior art keywords
- filter paper
- collar
- filter
- air
- retainer ring
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 239000000123 paper Substances 0.000 claims description 76
- 238000003475 lamination Methods 0.000 claims description 18
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 23
- 238000012423 maintenance Methods 0.000 abstract description 9
- 239000000853 adhesive Substances 0.000 description 12
- 230000001070 adhesive effect Effects 0.000 description 12
- 238000012360 testing method Methods 0.000 description 11
- 230000015556 catabolic process Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000007767 bonding agent Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
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- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model relates to a honeycomb type filter element for an air filter, which comprises a lower retainer ring, an upper retainer ring with a sealing ring, a central pipe arranged between centre parts of the upper retainer ring and the lower retainer ring and with the upper end and the lower end isolated, and a cylinder-shaped honeycomb type filter paper body with an overlapped paper plate, wherein the overlapped paper plate is formed by the way that a plane filter paper is combined with a fluting filter paper, the fluting filter paper is bonded with the plane filter paper in a sealing way through fluting peaks, and the upper air outlet end of each air inlet groove passage formed between the fluting filter paper and the plane filter paper is in a closed state. Furthermore, the overlapped paper plate winds the central pipe layer upon layer after connected with the central pipe through one end of the fluting filter paper, and the lower end of the circumferential gap formed by the way that the overlapped paper plate winds the central pipe layer upon layer is in a closed state. In addition, the other end of the fluting filter paper is boned to the position of the outer surface of the plane filter paper corresponding to the end, the inner shapes of the upper retainer ring and the lower retainer ring are matched with the outer shape of the filter paper body, and the upper retainer ring and the lower retainer ring are circumferentially clamped on the upper end and the lower end of the filter paper body in a sealing way. The air filter assembled with the filter element has lower original resistance, higher filtering rate and longer maintenance period.
Description
Technical field
The utility model relates to a kind of parts that are fit to be configured in the air filter, particularly relates to a kind of honeycomb fashion air cleaner cartridge, and the original resistance of air filter that disposes this filter core is lower, filtering efficiency is higher, maintenance period is longer.
Background technology
Existing production and widely used air cleaner cartridge are made up of parts such as rubber seal, upper end cover, outer protecting wire net, filter paper, interior protecting wire net, bottom end cover and clamp bars, filter paper becomes the star folding mode, and place between the inside and outside protecting wire net also with bonding agent and upper and lower end cap strong bond, the head of filter paper, terminal dead with the clamp bar folder, rubber seal uses the bonding agent strong bond on upper end cover.As seen, filter paper can only be arranged in the confined space between the inside and outside protecting wire net.
During use, the filter core of said structure will be installed in the shell of air filter.Circular passage between shell and the outer protecting wire net is as the inlet channel of air, and interior protecting wire net volume inside is as outlet passageway, and filter paper all can not more, more reasonably be arranged in the space that this two parts volume is very big, thereby the area of filter paper is less.
As everyone knows, in the certain spatial volume of air filter, the area that strengthens filter paper helps reducing the air velocity of air by filter paper, thereby reduces intake resistance; Help reducing possibility, improve the filtering efficiency of air filter because of the too high puncture filter paper of air velocity; Help prolonging the service life of filter core and the maintenance period of air filter.
Because the filter core of said structure exists the less weak point of filter paper area, therefore air is fast by the air velocity of filter paper, intake resistance is big, filter paper is easily breakdown, and the service life of filter core is shorter, so that the original resistance of air filter is higher, filtering efficiency is lower, maintenance period is shorter.
The utility model content
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, and a kind of honeycomb fashion air cleaner cartridge is provided, and the original resistance of air filter that disposes this filter core is lower, filtering efficiency is higher, maintenance period is longer.
For achieving the above object, the utility model provides a kind of honeycomb fashion air cleaner cartridge, it comprises collar down, the last collar of band sealing ring, be located between the center of collar and following collar and central tube that upper and lower side is isolated, the column honeycomb fashion filter paper body that the lamination cardboard is arranged, the lamination cardboard is composited by plane filter paper and corrugation filter paper, corrugation filter paper is bonding by stupefied peak on it and the sealing of plane filter paper, the last outlet side of formed each air inlet conduit is closed between corrugation filter paper and the plane filter paper, the end of lamination cardboard by corrugation filter paper is connected back wall with central tube and reels layer by layer around central tube, and the lower end of the circular gap of Xing Chenging is closed thus, bonding on the outer surface of the other end of corrugation filter paper and plane filter paper corresponding to this end place, last collar, the profile of the interior shape of following collar and filter paper body matches, and is installed on the upper and lower side of filter paper body last collar and following collar circumferential seal.
During use, this filter core is installed in the shell of air filter.Formed each air inlet conduit is as the inlet channel of air between corrugation filter paper and the plane filter paper.Because the last outlet side of each air inlet conduit is closed, like this, forces the dust laden air that enters each air inlet conduit can only pass corresponding corrugation filter paper and plane filter paper, and is able to filtering.
The lamination cardboard around central tube reel layer by layer formed circular gap comprise lamination cardboard itself because of layer by layer the coiling between formed circular gap between the adjacent two layers and corrugation filter paper and central tube formed circular gap.The air that is able to filtering enters in the above-mentioned circular gap, enter in the gap between the shell of this filter core and air filter.Therefore, above-mentioned circular gap and gap are as the outlet passageway that is able to the air of filtering.
Again because the lamination cardboard is closed around reel the layer by layer lower end of formed circular gap of central tube, be installed on the upper and lower side of filter paper body last collar and following collar circumferential seal, like this, the air that is able to filtering flows out, flows out in above-mentioned gap from the upper end of above-mentioned circular gap respectively.
As mentioned above, except that central tube, the volume of remaining space is very big in this filter core, and this part space all by reel layer by layer with more, more reasonably arrange the lamination cardboard that is composited by plane filter paper and corrugation filter paper.During use, this filter core is installed in the shell of air filter, can make full use of the assembly space in the shell, and the area of filter paper is bigger.Like this, help reducing the air velocity of air, thereby reduce intake resistance by filter paper; Help reducing the possibility of air breakdown filter paper, improve the filtering efficiency of air filter; Help prolonging the service life of filter core and the maintenance period of air filter.
Therefore, dispose that the original resistance of air filter of this filter core is lower, filtering efficiency is higher, maintenance period is longer.
The described interior shape of going up collar, following collar is circular, the profile of filter paper body is cylindric, and central tube is a pipe, the center of last collar have one with the circular retainer plate of its coaxial line, circumferential uniform four reinforcements between last collar and the retainer plate are pegged graft with retainer plate on the central tube.
Description of drawings
Fig. 1 is the shaft side decomposition figure of seeing towards the lower left from the upper right side of this filter core embodiment;
Fig. 2 is the structural representation of this filter core embodiment;
Fig. 3 is that the A of Fig. 2 is to partial view;
Fig. 4 is that the B of Fig. 2 is to partial view;
Fig. 5 is the structure and the use principle schematic diagram of this filter core embodiment.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is specifically described:
Referring to Fig. 1-Fig. 5, this filter core comprises collar 1 under the level, collar 4 on the level of band sealing ring 5, be located at the vertical central tube 2 between the center of collar 4 and following collar 1, the vertical cylindric honeycomb fashion filter paper body 3 that the lamination cardboard is arranged, last collar 4, the interior shape of following collar 1 is circular, like this, last collar 4, the profile of the interior shape of following collar 1 and filter paper body 3 matches, central tube 2 is a pipe, there is a dividing plate 21 the tube chamber bottom of central tube 2 so that the upper and lower side of this pipe is isolated, the center of last collar 4 have one with the circular retainer plate 42 of its coaxial line, circumferential uniform four reinforcements 41 between last collar 4 and the retainer plate 42 are pegged graft with retainer plate 42 on the central tube 2.
The lamination cardboard is composited by plane filter paper 31 and corrugation filter paper 32, the cross section of corrugation filter paper 32 is the V-type that links to each other continuously, corrugation filter paper 32 is bonding with 31 sealings of plane filter paper by the stupefied peak on it 33, the last outlet side of formed each air inlet conduit 10 all is marked with adhesive 8 and is closed (Fig. 1 between corrugation filter paper 32 and the plane filter paper 31, not shown adhesive 8 among Fig. 2, the adhesive 8 of part only is shown) among Fig. 5, an end and the central tube 2 bonding back walls of lamination cardboard by corrugation filter paper 32 are reeled with spiral fashion layer by layer around central tube 2, and the lower end of the circular gap 9 of Xing Chenging all is marked with adhesive 7 and is closed thus, bonding on the outer surface of the other end of corrugation filter paper 32 and plane filter paper 31 corresponding to this end place, last collar 4 and following collar 1 by means of adhesive 6 circumferential seals be installed on upper and lower side (Fig. 1 of filter paper body 3, not shown adhesive 6 among Fig. 5).
Need to prove, the local of filter paper body 3 only is shown among Fig. 3, Fig. 4 and amplifies, omit the remaining part in this filter core.
Referring to Fig. 5, during use, this filter core is installed in the shell interior (not shown described shell among Fig. 5) of air filter.The lower end of this filter core is inlet end, upper end and circumferentially is the outlet side among Fig. 5, and airflow direction is for from bottom to top.
Referring to Fig. 2-Fig. 5, formed each air inlet conduit 10 is as the inlet channel of air between corrugation filter paper 32 and the plane filter paper 31.Be closed owing to the last outlet side of each air inlet conduit 10 all is marked with adhesive 8, like this, force the dust laden air that enters each air inlet conduit 10 can only pass corresponding corrugation filter paper 32 and plane filter paper 31, and be able to filtering.
The lamination cardboard around central tube 2 reel layer by layer formed circular gap 9 comprise lamination cardboard itself because of layer by layer the coiling between formed circular gap between the adjacent two layers and corrugation filter paper 32 and central tube 2 formed circular gap.The air that is able to filtering enters in the above-mentioned circular gap 9, enter in the gap between the shell of this filter core and air filter (not shown described gap among Fig. 5).Therefore, above-mentioned circular gap 9 and gap are as the outlet passageway that is able to the air of filtering.
Again owing to the lamination cardboard is marked with adhesive 7 and is closed around reel the layer by layer lower end of formed circular gap 9 of central tube 2, last collar 4 and following collar 1 by means of adhesive 6 circumferential seals be installed on the upper and lower side of filter paper body 3, like this, the air that is able to filtering flows out, flows out in above-mentioned gap from the upper end of above-mentioned circular gap 9 respectively.
Described adhesive 6, adhesive 7, adhesive 8 are commercially available product.
The border is detected factually, the air cleaner cartridge of equal volume, the filter area of the interior filter paper (comprising plane filter paper and corrugation filter paper) of this filter core is 2.73 times of the interior filter paper filter area of existing filter core, like this, under the situation that guarantees the engine air flow, can reduce the filter core of air filter and the volume of shell, save the manufacturing cost of installing space and air filter.
Under the situation that the filter core volume is identical, air mass flow is identical of air filter, because the significantly increase of filter paper area in this filter core, like this, the air velocity of air by filter paper reduces, intake resistance reduces, the possibility of air breakdown filter paper reduces, prolong the service life of filter core, therefore, the original resistance of air filter that disposes this filter core is lower, filtering efficiency is higher, maintenance period is longer, thereby has effectively improved the performance of air filter.
For verifying the above-mentioned advantage of this filter core, adopt the filter core of this filter core and existing structure to make appearance and size, air filter (following this air filter and the existing air filter of abbreviating as respectively) that air inlet pipe is all identical with the escape pipe size respectively, carry out the flow-original resistance of filter core, the original filtering efficiency of air filter and the performance comparison test of storage dirt ability three aspects then successively, result of the test is as follows:
One, the flow of filter core-original resistance test
Referring to table one, identical and both the specified air mass flow QH=300m of appearance and size of two kinds of test filter cores
3/ h.
Table one
| Test air mass flow Q (m 3/h) | 150 | 180 | 210 | 240 | 270 | 300 | 330 |
| The original resistance △ P (KPa) of existing filter core | 0.11 | 0.14 | 0.18 | 0.22 | 0.26 | 0.31 | 0.36 |
| The original resistance △ P (KPa) of this filter core | 0.04 | 0.05 | 0.07 | 0.09 | 0.12 | 0.15 | 0.18 |
By table one as seen, the original resistance of this filter core is significantly less than the original resistance of existing filter core.
Two, the original filtering efficiency test of air filter
Test is at specified air mass flow 300m
3Carry out under the condition of/h.After testing, the filtering efficiency of existing air filter is 99.46%, and the filtering efficiency of this air filter is 99.92%, its filtering efficiency is much higher than the specification requirement (filtering efficiency 〉=99.5%) of China's industry standard regulation, therefore, this air filter is the airborne impurity of filtering, dust effectively, guarantees cylinder sleeve of engine, the unlikely generation premature wear of piston ring.
Three, the storage dirt ability test of air filter
Test is at specified air mass flow 300m
3Carry out under the condition of/h.When the test end of a period, when intake resistance is 6Kpa, the storage dirt ability of existing air filter is 605g, the storage dirt ability of this air filter is 1324g, its storage dirt ability is 2.19 times of existing air filter, this helps prolonging the service life and the maintenance period of air filter, improve its matching performance, and then reduce the oil consumption of engine.
Above-described only is a kind of embodiment of the present utility model.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model principle, can also make conspicuous some modification and improvement, these also should be considered as belonging to protection domain of the present utility model.Such as: the cross section of corrugation filter paper also can be U type or the undaform that links to each other continuously; When the height of filter core was big, the lamination cardboard also can be arranged the horizontal cushion rubber in some roads along the short transverse of filter core in central tube is reeled formed circular gap layer by layer, and described cushion rubber mainly plays the connection effect, and can not stop up outlet passageway; The coiling number of plies of lamination cardboard can determine flexibly according to the needs of product.
Claims (2)
1, the honeycomb fashion air cleaner cartridge, it is characterized in that: it comprises collar down, the last collar of band sealing ring, be located between the center of collar and following collar and central tube that upper and lower side is isolated, the column honeycomb fashion filter paper body that the lamination cardboard is arranged, the lamination cardboard is composited by plane filter paper and corrugation filter paper, corrugation filter paper is bonding by stupefied peak on it and the sealing of plane filter paper, the last outlet side of formed each air inlet conduit is closed between corrugation filter paper and the plane filter paper, the end of lamination cardboard by corrugation filter paper is connected back wall with central tube and reels layer by layer around central tube, and the lower end of the circular gap of Xing Chenging is closed thus, bonding on the outer surface of the other end of corrugation filter paper and plane filter paper corresponding to this end place, last collar, the profile of the interior shape of following collar and filter paper body matches, and is installed on the upper and lower side of filter paper body last collar and following collar circumferential seal.
2, honeycomb fashion air cleaner cartridge according to claim 1, it is characterized in that: the interior shape of going up collar, following collar is for circular, the profile of filter paper body is cylindric, central tube is a pipe, the center of last collar have one with the circular retainer plate of its coaxial line, circumferential uniform four reinforcements between last collar and the retainer plate are pegged graft with retainer plate on the central tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200264194U CN201253524Y (en) | 2008-07-26 | 2008-07-26 | Honeycomb type air cleaner filter-core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200264194U CN201253524Y (en) | 2008-07-26 | 2008-07-26 | Honeycomb type air cleaner filter-core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201253524Y true CN201253524Y (en) | 2009-06-10 |
Family
ID=40736836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200264194U Expired - Fee Related CN201253524Y (en) | 2008-07-26 | 2008-07-26 | Honeycomb type air cleaner filter-core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201253524Y (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780359B (en) * | 2009-11-23 | 2012-01-25 | 安吉县盛丰玻璃纤维有限公司 | Sealing ring of filter bag opening of dust remover and manufacturing method thereof |
| CN103157331A (en) * | 2013-03-04 | 2013-06-19 | 同济大学 | High-efficiency mesh channel hierarchical air filtering structure |
| CN104066490A (en) * | 2012-01-26 | 2014-09-24 | 曼·胡默尔有限公司 | Filter element and method for producing a filter element |
| CN104088736A (en) * | 2014-06-05 | 2014-10-08 | 浙江威泰汽配有限公司 | Corrugated paper filter element and filter |
| GB2540398A (en) * | 2015-07-16 | 2017-01-18 | Eaton Tech Ip Gmbh & Co Kg | Wound filter module |
| CN106925051A (en) * | 2017-03-15 | 2017-07-07 | 广西华原过滤系统股份有限公司 | A kind of honeycomb fashion filters core |
| CN107246336A (en) * | 2017-07-03 | 2017-10-13 | 广西华原过滤系统股份有限公司 | A kind of new cellular air cleaner cartridge and preparation method thereof |
| CN107587962A (en) * | 2017-10-30 | 2018-01-16 | 安徽工业大学 | A kind of compartment air cleaner of low-resistance noise reduction |
| CN107983088A (en) * | 2018-01-30 | 2018-05-04 | 深圳市西谷制冷设备有限公司 | Air purifier |
| WO2018082216A1 (en) * | 2016-11-01 | 2018-05-11 | 平原滤清器有限公司 | Filter element of air filter used for internal combustion engine of automobile and manufacturing method therefor |
| CN109621583A (en) * | 2019-01-25 | 2019-04-16 | 莆田盾之星滤清器有限公司 | A kind of high leakproofness filter being easily installed disassembly |
| CN109821324A (en) * | 2019-01-25 | 2019-05-31 | 莆田盾之星滤清器有限公司 | A kind of filter and its installation method with corrugated surface sealing ring |
| CN110167655A (en) * | 2016-10-24 | 2019-08-23 | 唐纳森公司 | Air filter element and its manufacturing method |
| CN111879265A (en) * | 2020-07-29 | 2020-11-03 | 高博集团有限公司 | Filter element detection device and method for air filter |
| CN115075994A (en) * | 2022-05-30 | 2022-09-20 | 柳州日高滤清器有限责任公司 | Preparation method of filter element core body of air filter |
| CN108071529B (en) * | 2018-02-01 | 2024-06-11 | 上海弗列加滤清器有限公司 | Safety filter element, air filter and car |
-
2008
- 2008-07-26 CN CNU2008200264194U patent/CN201253524Y/en not_active Expired - Fee Related
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780359B (en) * | 2009-11-23 | 2012-01-25 | 安吉县盛丰玻璃纤维有限公司 | Sealing ring of filter bag opening of dust remover and manufacturing method thereof |
| US9669341B2 (en) | 2012-01-26 | 2017-06-06 | Mann+Hummel Gmbh | Filter element and method for producing a filter element |
| CN104066490A (en) * | 2012-01-26 | 2014-09-24 | 曼·胡默尔有限公司 | Filter element and method for producing a filter element |
| CN104066490B (en) * | 2012-01-26 | 2016-09-14 | 曼·胡默尔有限公司 | Filter element and the method being used for manufacturing filter element |
| CN103157331A (en) * | 2013-03-04 | 2013-06-19 | 同济大学 | High-efficiency mesh channel hierarchical air filtering structure |
| CN104088736A (en) * | 2014-06-05 | 2014-10-08 | 浙江威泰汽配有限公司 | Corrugated paper filter element and filter |
| GB2540398A (en) * | 2015-07-16 | 2017-01-18 | Eaton Tech Ip Gmbh & Co Kg | Wound filter module |
| CN110167655A (en) * | 2016-10-24 | 2019-08-23 | 唐纳森公司 | Air filter element and its manufacturing method |
| US11517844B2 (en) | 2016-10-24 | 2022-12-06 | Donaldson Company, Inc. | Air filter element and method for producing same |
| WO2018082216A1 (en) * | 2016-11-01 | 2018-05-11 | 平原滤清器有限公司 | Filter element of air filter used for internal combustion engine of automobile and manufacturing method therefor |
| CN106925051A (en) * | 2017-03-15 | 2017-07-07 | 广西华原过滤系统股份有限公司 | A kind of honeycomb fashion filters core |
| CN107246336A (en) * | 2017-07-03 | 2017-10-13 | 广西华原过滤系统股份有限公司 | A kind of new cellular air cleaner cartridge and preparation method thereof |
| CN107587962A (en) * | 2017-10-30 | 2018-01-16 | 安徽工业大学 | A kind of compartment air cleaner of low-resistance noise reduction |
| CN107587962B (en) * | 2017-10-30 | 2023-09-29 | 安徽工业大学 | Low-resistance noise-reduction interval type air filter |
| CN107983088A (en) * | 2018-01-30 | 2018-05-04 | 深圳市西谷制冷设备有限公司 | Air purifier |
| CN108071529B (en) * | 2018-02-01 | 2024-06-11 | 上海弗列加滤清器有限公司 | Safety filter element, air filter and car |
| CN109821324A (en) * | 2019-01-25 | 2019-05-31 | 莆田盾之星滤清器有限公司 | A kind of filter and its installation method with corrugated surface sealing ring |
| CN109621583A (en) * | 2019-01-25 | 2019-04-16 | 莆田盾之星滤清器有限公司 | A kind of high leakproofness filter being easily installed disassembly |
| CN111879265A (en) * | 2020-07-29 | 2020-11-03 | 高博集团有限公司 | Filter element detection device and method for air filter |
| CN111879265B (en) * | 2020-07-29 | 2022-03-22 | 高博集团有限公司 | Filter element detection device and method for air filter |
| CN115075994A (en) * | 2022-05-30 | 2022-09-20 | 柳州日高滤清器有限责任公司 | Preparation method of filter element core body of air filter |
| CN115075994B (en) * | 2022-05-30 | 2024-03-29 | 柳州日高滤清器有限责任公司 | Preparation method of filter element core body of air filter |
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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: MANN-HUMMEL HAOYE FILTER (BENGBU) CO., LTD. Free format text: FORMER NAME: BENGBU HAOYE FILTER CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 233010 No. 8018, Mount Huangshan Avenue, hi tech Zone, Anhui, Bengbu Patentee after: Man Hummel industry filter (Bengbu) Co., Ltd. Address before: 233010 Anhui city of Bengbu province high tech District Middle Road Patentee before: Bengbu Haoye Filter Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090610 Termination date: 20150726 |
|
| EXPY | Termination of patent right or utility model |