H01M 8/026
Characterised by grooves
Official title: characterised by grooves, e.g. their pitch or depth
H01M8/026 (Characterised by grooves) appears on 750 US grants and 1,084 published applications in this corpus.
Search patents in H01M- Granted patents
- 750
- Published applications
- 1,084
- Assignees
- 381
- Inventors
- 2,048
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 4 |
| 2002 | 13 | 37 |
| 2003 | 19 | 38 |
| 2004 | 21 | 48 |
| 2005 | 22 | 61 |
| 2006 | 24 | 40 |
| 2007 | 11 | 50 |
| 2008 | 22 | 39 |
| 2009 | 16 | 49 |
| 2010 | 43 | 43 |
| 2011 | 36 | 34 |
| 2012 | 44 | 37 |
| 2013 | 24 | 37 |
| 2014 | 30 | 27 |
| 2015 | 31 | 52 |
| 2016 | 23 | 30 |
| 2017 | 32 | 39 |
| 2018 | 36 | 42 |
| 2019 | 40 | 45 |
| 2020 | 45 | 46 |
| 2021 | 34 | 34 |
| 2022 | 32 | 52 |
| 2023 | 28 | 64 |
| 2024 | 25 | 41 |
| 2025 | 30 | 52 |
| 2026 | 21 | 43 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fuel cell separator and method for manufacturing same6 Oct 2026US 12,755,986 B2Dongwoo Hst Co., Ltd.
- SOC stack comprising integrated interconnect and spacer6 Oct 2026US 12,755,998 B2Topsoe A/S
- Bipolar separator for electrochemical reactor22 Sep 2026US 12,744,225 B2Alstom HydrogèNe SAS
- Gas diffusion member, gas diffusion unit, and fuel cell30 Jun 2026US 12,671,097 B2Enomoto Co., Ltd.
- Separator for fuel cell30 Jun 2026US 12,671,098 B2Toyota Boshoku Kabushiki Kaisha
- Method for producing separator8 Oct 2026US 2026/0312084 A1Nok Corporation
- Electrochemical cell stack interconnect including screen printed features and methods of forming same1 Oct 2026US 2026/0297768 A1Bloom Energy Corporation
- Separator, electrochemical cell, stack and apparatus24 Sep 2026US 2026/0290852 A1Kabushiki Kaisha Toshiba
- Separator, electrochemical cell, stack and apparatus24 Sep 2026US 2026/0290853 A1Kabushiki Kaisha Toshiba
- Busbar Arrangement, and Fuel Cell24 Sep 2026US 2026/0290855 A1Bayerische Motoren Werke Aktiengesellschaft
Most cited
By later US patents
- Method for manufacturing porous structure and method for forming pattern645US 6,565,763 B1Kabushiki Kaisha Toshiba · 2003
- Fuel cell fluid flow field plate132US 5,108,849 AHer Majesty the Queen in right of Canada, as represented by the Minister of National Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland · 1992
- Novel fuel cell fluid flow field plate123US 4,988,583 AHer Majesty the Queen as represented by the Minister of National Defence of Her Majesty's Canadian Government · 1991
- Apparatus for thermal swing adsorption and thermally-enhanced pressure swing adsorption98US 6,974,496 B2Battelle Memorial Institute · 2005
- Plastic platelet fuel cells employing integrated fluid management91US 5,863,671 AH Power Corporation · 1999