H01M 8/0213
Gas-impermeable carbon-containing materials
H01M8/0213 (Gas-impermeable carbon-containing materials) appears on 521 US grants and 750 published applications in this corpus.
Search patents in H01M- Granted patents
- 521
- Published applications
- 750
- Assignees
- 344
- Inventors
- 1,650
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 7 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 10 | 0 |
| 2000 | 9 | 0 |
| 2001 | 15 | 10 |
| 2002 | 18 | 61 |
| 2003 | 22 | 48 |
| 2004 | 32 | 59 |
| 2005 | 26 | 54 |
| 2006 | 23 | 42 |
| 2007 | 12 | 44 |
| 2008 | 19 | 38 |
| 2009 | 23 | 33 |
| 2010 | 31 | 37 |
| 2011 | 15 | 31 |
| 2012 | 16 | 20 |
| 2013 | 18 | 18 |
| 2014 | 18 | 18 |
| 2015 | 16 | 14 |
| 2016 | 14 | 15 |
| 2017 | 11 | 16 |
| 2018 | 6 | 19 |
| 2019 | 11 | 25 |
| 2020 | 19 | 20 |
| 2021 | 17 | 19 |
| 2022 | 14 | 30 |
| 2023 | 21 | 21 |
| 2024 | 14 | 35 |
| 2025 | 8 | 13 |
| 2026 | 8 | 10 |
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.
- Bipolar plate for fuel cells, fuel cell stack having such bipolar plates, and vehicle having such a fuel cell stack1 Sep 2026US 12,725,808 B2Audi AG
- Part coated with a carbon-based layer4 Aug 2026US 12,698,556 B2Hydromecanique Et Frottement
- Current collector for redox flow batteries16 Jun 2026US 12,658,450 B2Uop LLC
- Proprietary cure module and method for impregnating graphite26 May 2026US 12,640,376 B2Godfrey & Wing, LLC
- Separator for fuel cell and method of manufacturing separator for fuel cell1 Oct 2026US 2026/0302270 A1Toyota Jidosha Kabushiki Kaisha
- Part coated with a carbon-based layer10 Sep 2026US 2026/0269280 A1Hydromecanique Et Frottement
- Composite fuel cell bipolar plate13 Aug 2026US 2026/0237689 A1GM Global Technology Operations LLC
- Coated graphite particulate material23 Jul 2026US 2026/0209048 A1ImerTech SAS
- Method of production for components of a fuel cell stack2 Jul 2026US 2026/0183993 A1Cellcentric GmbH & Co. KG
Most cited
By later US patents
- Low cost bipolar current collector-separator for electrochemical cells160US 4,214,969 AGeneral Electric Company · 1980
- 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
- Laminated fluid flow field assembly for electrochemical fuel cells126US 5,300,370 ABallard Power Systems Inc. · 1994
- 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
- Flexible graphite composite122US 5,902,762 AUCAR Carbon Technology Corporation · 1999