H01M 8/0228
In the form of layered or coated products
Official title: in the form of layered or coated products
H01M8/0228 (In the form of layered or coated products) appears on 1,209 US grants and 1,691 published applications in this corpus.
Search patents in H01M- Granted patents
- 1,209
- Published applications
- 1,691
- Assignees
- 566
- Inventors
- 3,132
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 6 | 0 |
| 1996 | 13 | 0 |
| 1997 | 7 | 0 |
| 1998 | 17 | 0 |
| 1999 | 19 | 0 |
| 2000 | 21 | 0 |
| 2001 | 28 | 12 |
| 2002 | 23 | 55 |
| 2003 | 29 | 73 |
| 2004 | 43 | 89 |
| 2005 | 35 | 96 |
| 2006 | 32 | 99 |
| 2007 | 30 | 102 |
| 2008 | 29 | 100 |
| 2009 | 38 | 108 |
| 2010 | 75 | 93 |
| 2011 | 69 | 65 |
| 2012 | 71 | 47 |
| 2013 | 51 | 58 |
| 2014 | 58 | 54 |
| 2015 | 47 | 47 |
| 2016 | 49 | 47 |
| 2017 | 33 | 31 |
| 2018 | 32 | 53 |
| 2019 | 43 | 58 |
| 2020 | 46 | 47 |
| 2021 | 48 | 70 |
| 2022 | 49 | 60 |
| 2023 | 42 | 67 |
| 2024 | 38 | 72 |
| 2025 | 28 | 49 |
| 2026 | 24 | 39 |
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 separator for electrochemical reactor22 Sep 2026US 12,744,225 B2Alstom HydrogèNe SAS
- Fuel cell interconnect alloyed with transition metal element and method of making thereof8 Sep 2026US 12,731,795 B2Bloom Energy Corporation
- Bipolar plate, method of production, and use thereof8 Sep 2026US 12,731,796 B2EKPO Fuel Cell Technologies GmbH
- 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
- Separator for fuel cell and method of manufacturing separator for fuel cell1 Oct 2026US 2026/0302270 A1Toyota Jidosha Kabushiki Kaisha
- Hybrid seal for electrochemical cell17 Sep 2026US 2026/0279851 A1GM Global Technology Operations LLC
- Metal separator10 Sep 2026US 2026/0269279 A1Hyundai Steel Company
- Part coated with a carbon-based layer10 Sep 2026US 2026/0269280 A1Hydromecanique Et Frottement
- Metal separator and method for manufacturing the same20 Aug 2026US 2026/0245918 A1Hyundai Steel Company
Most cited
By later US patents
- High energy density redox flow device172US 8,722,226 B224M Technologies, Inc. · 2014
- Brazed bipolar plates for PEM fuel cells144US 5,776,624 AGeneral Motors Corporation · 1998
- High energy density redox flow device134US 9,153,833 B224M Technologies, Inc. · 2015
- 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