CN102138203B - 结构化磨料制品、其制备方法、及其在晶片平面化中的用途 - Google Patents
结构化磨料制品、其制备方法、及其在晶片平面化中的用途 Download PDFInfo
- Publication number
- CN102138203B CN102138203B CN200980134338.3A CN200980134338A CN102138203B CN 102138203 B CN102138203 B CN 102138203B CN 200980134338 A CN200980134338 A CN 200980134338A CN 102138203 B CN102138203 B CN 102138203B
- Authority
- CN
- China
- Prior art keywords
- abrasive
- meth
- acrylate
- structured
- translucent film
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/304—Mechanical treatment, e.g. grinding, polishing, cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/11—Lapping tools
- B24B37/20—Lapping pads for working plane surfaces
- B24B37/24—Lapping pads for working plane surfaces characterised by the composition or properties of the pad materials
- B24B37/245—Pads with fixed abrasives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/11—Lapping tools
- B24B37/20—Lapping pads for working plane surfaces
- B24B37/205—Lapping pads for working plane surfaces provided with a window for inspecting the surface of the work being lapped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US9252108P | 2008-08-28 | 2008-08-28 | |
| US61/092,521 | 2008-08-28 | ||
| PCT/US2009/052188 WO2010025003A2 (en) | 2008-08-28 | 2009-07-30 | Structured abrasive article, method of making the same, and use in wafer planarization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102138203A CN102138203A (zh) | 2011-07-27 |
| CN102138203B true CN102138203B (zh) | 2015-02-04 |
Family
ID=41722203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980134338.3A Expired - Fee Related CN102138203B (zh) | 2008-08-28 | 2009-07-30 | 结构化磨料制品、其制备方法、及其在晶片平面化中的用途 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8251774B2 (enExample) |
| EP (1) | EP2327088B1 (enExample) |
| JP (1) | JP5351967B2 (enExample) |
| KR (1) | KR101602001B1 (enExample) |
| CN (1) | CN102138203B (enExample) |
| TW (1) | TWI429735B (enExample) |
| WO (1) | WO2010025003A2 (enExample) |
Families Citing this family (49)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103189164B (zh) * | 2010-11-01 | 2016-07-06 | 3M创新有限公司 | 用于制备成形陶瓷磨粒的激光法、成形陶瓷磨粒以及磨料制品 |
| WO2013003830A2 (en) | 2011-06-30 | 2013-01-03 | Saint-Gobain Ceramics & Plastics, Inc. | Abrasive articles including abrasive particles of silicon nitride |
| CA2850147A1 (en) | 2011-09-26 | 2013-04-04 | Saint-Gobain Ceramics & Plastics, Inc. | Abrasive articles including abrasive particulate materials, coated abrasives using the abrasive particulate materials and methods of forming |
| CN102492233A (zh) * | 2011-12-05 | 2012-06-13 | 张莉娟 | 复合磨粒、其制备方法及用途 |
| CN104114327B (zh) | 2011-12-30 | 2018-06-05 | 圣戈本陶瓷及塑料股份有限公司 | 复合成型研磨颗粒及其形成方法 |
| KR20140106713A (ko) | 2011-12-30 | 2014-09-03 | 생-고뱅 세라믹스 앤드 플라스틱스, 인코포레이티드 | 형상화 연마입자 및 이의 형성방법 |
| US8840696B2 (en) | 2012-01-10 | 2014-09-23 | Saint-Gobain Ceramics & Plastics, Inc. | Abrasive particles having particular shapes and methods of forming such particles |
| KR101667943B1 (ko) | 2012-01-10 | 2016-10-20 | 생-고뱅 세라믹스 앤드 플라스틱스, 인코포레이티드 | 복잡한 형상들을 가지는 연마 입자들 및 이의 성형 방법들 |
| CN102604543B (zh) * | 2012-04-11 | 2014-02-19 | 宣城晶瑞新材料有限公司 | 一种抛光液用高稳定纳米二氧化铈水性浆料制备方法 |
| PL2852473T3 (pl) | 2012-05-23 | 2021-06-28 | Saint-Gobain Ceramics & Plastics Inc. | Ukształtowane cząstki ścierne i sposoby ich formowania |
| CN104411459B (zh) | 2012-06-29 | 2018-06-15 | 圣戈本陶瓷及塑料股份有限公司 | 具有特定形状的磨粒和形成这种粒子的方法 |
| KR20150058302A (ko) * | 2012-09-21 | 2015-05-28 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | 개선된 cmp 성능을 위한 고정 연마 웹으로의 첨가제의 혼입 |
| KR101736085B1 (ko) | 2012-10-15 | 2017-05-16 | 생-고뱅 어브레이시브즈, 인코포레이티드 | 특정한 형태들을 가진 연마 입자들 및 이러한 입자들을 형성하는 방법들 |
| US9074119B2 (en) | 2012-12-31 | 2015-07-07 | Saint-Gobain Ceramics & Plastics, Inc. | Particulate materials and methods of forming same |
| BR112015024901B1 (pt) | 2013-03-29 | 2022-01-18 | Saint-Gobain Abrasifs | Partículas abrasivas tendo formas particulares e métodos para formar essas partículas |
| JP2016530109A (ja) | 2013-06-07 | 2016-09-29 | スリーエム イノベイティブ プロパティズ カンパニー | 基材のくぼみ、研磨ホイール、及びカバーを形成する方法 |
| TW201502263A (zh) | 2013-06-28 | 2015-01-16 | Saint Gobain Ceramics | 包含成形研磨粒子之研磨物品 |
| MX2016004000A (es) | 2013-09-30 | 2016-06-02 | Saint Gobain Ceramics | Particulas abrasivas moldeadas y metodos para formación de ellas. |
| USD742195S1 (en) * | 2013-12-16 | 2015-11-03 | 3M Innovation Properties Company | Sanding article with pattern |
| USD742196S1 (en) * | 2013-12-16 | 2015-11-03 | 3M Innovative Properties Company | Sanding article with pattern |
| JP6290428B2 (ja) | 2013-12-31 | 2018-03-07 | サンーゴバン アブレイシブズ,インコーポレイティド | 成形研磨粒子を含む研磨物品 |
| US9771507B2 (en) | 2014-01-31 | 2017-09-26 | Saint-Gobain Ceramics & Plastics, Inc. | Shaped abrasive particle including dopant material and method of forming same |
| MX394114B (es) | 2014-04-14 | 2025-03-24 | Saint Gobain Ceramics | Articulo abrasivo que incluye particulas abrasivas conformadas. |
| CN106457521A (zh) | 2014-04-14 | 2017-02-22 | 圣戈本陶瓷及塑料股份有限公司 | 包括成形磨粒的研磨制品 |
| KR20160147700A (ko) * | 2014-05-01 | 2016-12-23 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | 가요성 연마 물품 및 이의 사용 방법 |
| WO2015184355A1 (en) | 2014-05-30 | 2015-12-03 | Saint-Gobain Abrasives, Inc. | Method of using an abrasive article including shaped abrasive particles |
| US10259102B2 (en) * | 2014-10-21 | 2019-04-16 | 3M Innovative Properties Company | Abrasive preforms, method of making an abrasive article, and bonded abrasive article |
| US9707529B2 (en) | 2014-12-23 | 2017-07-18 | Saint-Gobain Ceramics & Plastics, Inc. | Composite shaped abrasive particles and method of forming same |
| US9914864B2 (en) | 2014-12-23 | 2018-03-13 | Saint-Gobain Ceramics & Plastics, Inc. | Shaped abrasive particles and method of forming same |
| US9676981B2 (en) | 2014-12-24 | 2017-06-13 | Saint-Gobain Ceramics & Plastics, Inc. | Shaped abrasive particle fractions and method of forming same |
| TWI634200B (zh) | 2015-03-31 | 2018-09-01 | 聖高拜磨料有限公司 | 固定磨料物品及其形成方法 |
| CN107636109A (zh) * | 2015-03-31 | 2018-01-26 | 圣戈班磨料磨具有限公司 | 固定磨料制品和其形成方法 |
| WO2016201104A1 (en) | 2015-06-11 | 2016-12-15 | Saint-Gobain Ceramics & Plastics, Inc. | Abrasive article including shaped abrasive particles |
| US20170335155A1 (en) | 2016-05-10 | 2017-11-23 | Saint-Gobain Ceramics & Plastics, Inc. | Abrasive particles and methods of forming same |
| WO2017197006A1 (en) | 2016-05-10 | 2017-11-16 | Saint-Gobain Ceramics & Plastics, Inc. | Abrasive particles and methods of forming same |
| US11607776B2 (en) | 2016-07-20 | 2023-03-21 | 3M Innovative Properties Company | Shaped vitrified abrasive agglomerate, abrasive articles, and method of abrading |
| US11230653B2 (en) | 2016-09-29 | 2022-01-25 | Saint-Gobain Abrasives, Inc. | Fixed abrasive articles and methods of forming same |
| US11478899B2 (en) | 2016-10-25 | 2022-10-25 | 3M Innovative Properties Company | Shaped vitrified abrasive agglomerate with shaped abrasive particles, abrasive articles, and related methods |
| KR20180072243A (ko) * | 2016-12-21 | 2018-06-29 | 엠.씨.케이 (주) | 연마체 수지 조성물 및 이에 의해 제조된 패드 |
| US10563105B2 (en) | 2017-01-31 | 2020-02-18 | Saint-Gobain Ceramics & Plastics, Inc. | Abrasive article including shaped abrasive particles |
| US10759024B2 (en) | 2017-01-31 | 2020-09-01 | Saint-Gobain Ceramics & Plastics, Inc. | Abrasive article including shaped abrasive particles |
| EP3642293A4 (en) | 2017-06-21 | 2021-03-17 | Saint-Gobain Ceramics&Plastics, Inc. | PARTICULATE MATERIALS AND METHOD FOR MANUFACTURING THEREOF |
| EP3759191B1 (en) | 2018-03-01 | 2022-05-04 | 3M Innovative Properties Company | Shaped siliceous abrasive agglomerate with shaped abrasive particles, abrasive articles, and related methods |
| US12129422B2 (en) | 2019-12-27 | 2024-10-29 | Saint-Gobain Ceramics & Plastics, Inc. | Abrasive articles and methods of forming same |
| EP4081369A4 (en) | 2019-12-27 | 2024-04-10 | Saint-Gobain Ceramics & Plastics Inc. | Abrasive articles and methods of forming same |
| EP4081370A4 (en) | 2019-12-27 | 2024-04-24 | Saint-Gobain Ceramics & Plastics Inc. | ABRASIVE ARTICLES AND THEIR FORMATION PROCESSES |
| MX2024007593A (es) | 2021-12-30 | 2024-08-20 | Saint Gobain Abrasives Inc | Artículos abrasivos y métodos de formación de los mismos. |
| CN118541241A (zh) | 2021-12-30 | 2024-08-23 | 圣戈班磨料磨具有限公司 | 磨料制品及其形成方法 |
| JPWO2024034618A1 (enExample) * | 2022-08-09 | 2024-02-15 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999015311A1 (en) * | 1997-09-19 | 1999-04-01 | Minnesota Mining And Manufacturing Company | Abrasive articles comprising a fluorochemical agent for wafer surface modification |
| WO2000064633A2 (en) * | 1999-04-23 | 2000-11-02 | 3M Innovative Properties Company | Abrasive article suitable for abrading glass and glass ceramic workpieces |
| CN101175607A (zh) * | 2005-04-08 | 2008-05-07 | 圣戈本磨料股份有限公司 | 具有反应活性生色团的研磨制品 |
Family Cites Families (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2868772B2 (ja) * | 1988-09-20 | 1999-03-10 | 大日本印刷株式会社 | 研磨テープの製造方法 |
| US5152917B1 (en) | 1991-02-06 | 1998-01-13 | Minnesota Mining & Mfg | Structured abrasive article |
| RU2124978C1 (ru) * | 1993-09-13 | 1999-01-20 | Миннесота Майнинг Энд Мэнюфекчуринг Компани | Абразивное изделие, способ его производства, способ его использования для чистовой обработки и рабочий инструмент для его производства |
| WO1995022436A1 (en) | 1994-02-22 | 1995-08-24 | Minnesota Mining And Manufacturing Company | Abrasive article, a method of making same, and a method of using same for finishing |
| US5551959A (en) * | 1994-08-24 | 1996-09-03 | Minnesota Mining And Manufacturing Company | Abrasive article having a diamond-like coating layer and method for making same |
| US5645471A (en) | 1995-08-11 | 1997-07-08 | Minnesota Mining And Manufacturing Company | Method of texturing a substrate using an abrasive article having multiple abrasive natures |
| US5958794A (en) | 1995-09-22 | 1999-09-28 | Minnesota Mining And Manufacturing Company | Method of modifying an exposed surface of a semiconductor wafer |
| US5624303A (en) | 1996-01-22 | 1997-04-29 | Micron Technology, Inc. | Polishing pad and a method for making a polishing pad with covalently bonded particles |
| US5692950A (en) | 1996-08-08 | 1997-12-02 | Minnesota Mining And Manufacturing Company | Abrasive construction for semiconductor wafer modification |
| US6329058B1 (en) | 1998-07-30 | 2001-12-11 | 3M Innovative Properties Company | Nanosize metal oxide particles for producing transparent metal oxide colloids and ceramers |
| US6213845B1 (en) | 1999-04-26 | 2001-04-10 | Micron Technology, Inc. | Apparatus for in-situ optical endpointing on web-format planarizing machines in mechanical or chemical-mechanical planarization of microelectronic-device substrate assemblies and methods for making and using same |
| US6290572B1 (en) | 2000-03-23 | 2001-09-18 | Micron Technology, Inc. | Devices and methods for in-situ control of mechanical or chemical-mechanical planarization of microelectronic-device substrate assemblies |
| CN100343019C (zh) | 2000-04-28 | 2007-10-17 | 3M创新有限公司 | 研磨制品以及研磨玻璃的方法 |
| US6497957B1 (en) * | 2000-10-04 | 2002-12-24 | Eastman Kodak Company | Antireflection article of manufacture |
| US20020072296A1 (en) | 2000-11-29 | 2002-06-13 | Muilenburg Michael J. | Abrasive article having a window system for polishing wafers, and methods |
| KR100905266B1 (ko) | 2000-12-01 | 2009-06-29 | 도요 고무 고교 가부시키가이샤 | 연마 패드 |
| JP2002254316A (ja) * | 2001-02-28 | 2002-09-10 | Hitachi Maxell Ltd | 研磨シ―ト |
| US6884723B2 (en) | 2001-12-21 | 2005-04-26 | Micron Technology, Inc. | Methods for planarization of group VIII metal-containing surfaces using complexing agents |
| US6949128B2 (en) | 2001-12-28 | 2005-09-27 | 3M Innovative Properties Company | Method of making an abrasive product |
| US7175503B2 (en) | 2002-02-04 | 2007-02-13 | Kla-Tencor Technologies Corp. | Methods and systems for determining a characteristic of polishing within a zone on a specimen from combined output signals of an eddy current device |
| US7131889B1 (en) | 2002-03-04 | 2006-11-07 | Micron Technology, Inc. | Method for planarizing microelectronic workpieces |
| US20040005769A1 (en) | 2002-07-03 | 2004-01-08 | Cabot Microelectronics Corp. | Method and apparatus for endpoint detection |
| US20040127045A1 (en) | 2002-09-12 | 2004-07-01 | Gorantla Venkata R. K. | Chemical mechanical planarization of wafers or films using fixed polishing pads and a nanoparticle composition |
| US7066801B2 (en) | 2003-02-21 | 2006-06-27 | Dow Global Technologies, Inc. | Method of manufacturing a fixed abrasive material |
| US6910951B2 (en) | 2003-02-24 | 2005-06-28 | Dow Global Technologies, Inc. | Materials and methods for chemical-mechanical planarization |
| US6918821B2 (en) | 2003-11-12 | 2005-07-19 | Dow Global Technologies, Inc. | Materials and methods for low pressure chemical-mechanical planarization |
| US20060030156A1 (en) | 2004-08-05 | 2006-02-09 | Applied Materials, Inc. | Abrasive conductive polishing article for electrochemical mechanical polishing |
| US7591865B2 (en) * | 2005-01-28 | 2009-09-22 | Saint-Gobain Abrasives, Inc. | Method of forming structured abrasive article |
| US7344574B2 (en) * | 2005-06-27 | 2008-03-18 | 3M Innovative Properties Company | Coated abrasive article, and method of making and using the same |
| US20070066186A1 (en) | 2005-09-22 | 2007-03-22 | 3M Innovative Properties Company | Flexible abrasive article and methods of making and using the same |
| JP2007273910A (ja) * | 2006-03-31 | 2007-10-18 | Fujifilm Corp | 研磨用組成液 |
| KR100772034B1 (ko) * | 2006-12-08 | 2007-10-31 | 주식회사 썬텍인더스트리 | 코팅된 3차원 연마재 구조물을 갖는 연마포지의 제조방법 |
| US7497885B2 (en) * | 2006-12-22 | 2009-03-03 | 3M Innovative Properties Company | Abrasive articles with nanoparticulate fillers and method for making and using them |
| US8083820B2 (en) * | 2006-12-22 | 2011-12-27 | 3M Innovative Properties Company | Structured fixed abrasive articles including surface treated nano-ceria filler, and method for making and using the same |
| WO2009128982A2 (en) * | 2008-04-18 | 2009-10-22 | Saint-Gobain Abrasives, Inc. | High porosity abrasive articles and methods of manufacturing same |
-
2009
- 2009-07-30 WO PCT/US2009/052188 patent/WO2010025003A2/en not_active Ceased
- 2009-07-30 JP JP2011525047A patent/JP5351967B2/ja not_active Expired - Fee Related
- 2009-07-30 EP EP09810426.8A patent/EP2327088B1/en not_active Not-in-force
- 2009-07-30 KR KR1020117006536A patent/KR101602001B1/ko not_active Expired - Fee Related
- 2009-07-30 CN CN200980134338.3A patent/CN102138203B/zh not_active Expired - Fee Related
- 2009-08-11 TW TW098126988A patent/TWI429735B/zh not_active IP Right Cessation
- 2009-08-12 US US12/539,798 patent/US8251774B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999015311A1 (en) * | 1997-09-19 | 1999-04-01 | Minnesota Mining And Manufacturing Company | Abrasive articles comprising a fluorochemical agent for wafer surface modification |
| WO2000064633A2 (en) * | 1999-04-23 | 2000-11-02 | 3M Innovative Properties Company | Abrasive article suitable for abrading glass and glass ceramic workpieces |
| CN101175607A (zh) * | 2005-04-08 | 2008-05-07 | 圣戈本磨料股份有限公司 | 具有反应活性生色团的研磨制品 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012501252A (ja) | 2012-01-19 |
| KR101602001B1 (ko) | 2016-03-17 |
| WO2010025003A2 (en) | 2010-03-04 |
| TW201012908A (en) | 2010-04-01 |
| EP2327088A4 (en) | 2017-06-14 |
| TWI429735B (zh) | 2014-03-11 |
| EP2327088A2 (en) | 2011-06-01 |
| WO2010025003A3 (en) | 2010-04-22 |
| US20100056024A1 (en) | 2010-03-04 |
| KR20110055686A (ko) | 2011-05-25 |
| EP2327088B1 (en) | 2019-01-09 |
| JP5351967B2 (ja) | 2013-11-27 |
| US8251774B2 (en) | 2012-08-28 |
| CN102138203A (zh) | 2011-07-27 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20190730 |
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| CF01 | Termination of patent right due to non-payment of annual fee |