H01M 8/0276
Sealing means characterised by their form
Official title: Sealing means characterised by their form (H01M8/0273 takes precedence)
H01M8/0276 (Sealing means characterised by their form) appears on 655 US grants and 1,017 published applications in this corpus.
Search patents in H01M- Granted patents
- 655
- Published applications
- 1,017
- Assignees
- 323
- Inventors
- 1,948
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 1 |
| 2002 | 3 | 16 |
| 2003 | 5 | 17 |
| 2004 | 10 | 33 |
| 2005 | 5 | 37 |
| 2006 | 8 | 41 |
| 2007 | 17 | 42 |
| 2008 | 13 | 52 |
| 2009 | 27 | 64 |
| 2010 | 37 | 40 |
| 2011 | 29 | 46 |
| 2012 | 41 | 36 |
| 2013 | 28 | 43 |
| 2014 | 31 | 44 |
| 2015 | 33 | 43 |
| 2016 | 27 | 42 |
| 2017 | 32 | 32 |
| 2018 | 36 | 45 |
| 2019 | 52 | 49 |
| 2020 | 35 | 31 |
| 2021 | 32 | 45 |
| 2022 | 40 | 42 |
| 2023 | 27 | 59 |
| 2024 | 23 | 43 |
| 2025 | 20 | 34 |
| 2026 | 23 | 40 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fuel cell assembly29 Sep 2026US 12,749,691 B2Powercell Sweden AB
- Bipolar separator for electrochemical reactor22 Sep 2026US 12,744,225 B2Alstom HydrogèNe SAS
- Fuel cell assembly and method for manufacturing the same8 Sep 2026US 12,731,798 B2Sumitomo Riko Company Limited
- Separator integrated with gasket for fuel cell and method for manufacturing the same25 Aug 2026US 12,719,065 B2Hyundai Motor Company
- Gas diffusion method for use with fuel cell stack25 Aug 2026US 12,719,069 B2Intelligent Energy Limited
- Fluid connector structure and hydrogen line for fuel cell8 Oct 2026US 2026/0312086 A1Nifco Inc.
- Spacer member and fuel cell1 Oct 2026US 2026/0302274 A1Toyota Jidosha Kabushiki Kaisha
- Fuel cell1 Oct 2026US 2026/0302275 A1Toyota Jidosha Kabushiki Kaisha
- Fuel cell sealing structure24 Sep 2026US 2026/0290856 A1Toyota Jidosha Kabushiki Kaisha
- Metal separator10 Sep 2026US 2026/0269279 A1Hyundai Steel Company
Most cited
By later US patents
- Solid electrolyte fuel cell125US 4,910,100 AFuji Electric Co., Ltd. · 1990
- High performance ceramic fuel cell interconnect with integrated flowpaths and method for making same61US 6,949,307 B2SFCo-EFS Holdings, LLC · 2005
- Proton exchange membrane fuel cell43US 5,879,826 AHumboldt State University Foundation · 1999
- Encapsulating seals for electrochemical cell stacks and methods of sealing electrochemical cell stacks43US 6,596,427 B1Ballard Power Systems Inc. · 2003
- Use of thermoplastic films to create seals and bond PEM cell components42US 6,159,628 AInternational Fuel Cells Corporation · 2000