H01M 8/025
Semicylindrical
Official title: semicylindrical
H01M8/025 (Semicylindrical) appears on 68 US grants and 84 published applications in this corpus.
Search patents in H01M- Granted patents
- 68
- Published applications
- 84
- Assignees
- 56
- Inventors
- 203
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 1 |
| 2002 | 5 | 4 |
| 2003 | 2 | 2 |
| 2004 | 1 | 13 |
| 2005 | 5 | 7 |
| 2006 | 0 | 9 |
| 2007 | 4 | 8 |
| 2008 | 1 | 13 |
| 2009 | 3 | 2 |
| 2010 | 6 | 6 |
| 2011 | 4 | 2 |
| 2012 | 3 | 2 |
| 2013 | 1 | 2 |
| 2014 | 3 | 1 |
| 2015 | 2 | 1 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 2 | 1 |
| 2019 | 0 | 0 |
| 2020 | 2 | 2 |
| 2021 | 0 | 0 |
| 2022 | 0 | 2 |
| 2023 | 2 | 2 |
| 2024 | 0 | 0 |
| 2025 | 2 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Separator plate with a homogenized bead strength in the port region11 Nov 2025US 12,469,855 B2Reinz-Dichtungs-GmbH
- Bipolar plate for fuel cell stack29 Jul 2025US 12,374,702 B2Nissan North America, Inc.
- Frameless fuel cell stack having hollow fasteners10 Oct 2023US 11,784,325 B2Nissan North America, Inc.
- Fuel cell and fuel cell system for an aircraft4 Jul 2023US 11,695,131 B2Airbus Defence and Space GmbH
- Cell stack device28 Jul 2020US 10,727,524 B2NGK Insulators, Ltd.
- Power generation cell and fuel cell stack1 Oct 2026US 2026/0302271 A1Honda Motor Co., Ltd.
- Soc stack comprising connection plate24 Sep 2026US 2026/0286545 A1Topsoe A/S
- Bipolar plate for fuel cell stack30 Mar 2023US 2023/0096327 A1Nissan North America, Inc.
- Frameless fuel cell stack having hollow fasteners30 Mar 2023US 2023/0096918 A1Nissan North America, Inc.
- Separator plate with a homogenized bead strength in the port region20 Oct 2022US 2022/0336825 A1Reinz-Dichtungs-GmbH
Most cited
By later US patents
- Solid electrolyte fuel cell125US 4,910,100 AFuji Electric Co., Ltd. · 1990
- Electrochemical apparatus with reactant micro-channels90US 6,361,892 B1Technology Management, Inc. · 2002
- Fuel cell stacks for ultra-high efficiency power systems80US 6,458,477 B1Ztek Corporation · 2002
- Ultra-high efficiency turbine and fuel cell combination65US 5,693,201 AZtek Corporation · 1997
- Electrochemical fuel cell assembly with integral selective oxidizer64US 5,482,680 ABallard Power Systems Inc. · 1996