H01M 8/0265
The reactant or coolant channels having varying cross sections
Official title: the reactant or coolant channels having varying cross sections
H01M8/0265 (The reactant or coolant channels having varying cross sections) appears on 355 US grants and 493 published applications in this corpus.
Search patents in H01M- Granted patents
- 355
- Published applications
- 493
- Assignees
- 188
- Inventors
- 1,050
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 3 |
| 2002 | 9 | 10 |
| 2003 | 11 | 16 |
| 2004 | 8 | 21 |
| 2005 | 8 | 23 |
| 2006 | 6 | 31 |
| 2007 | 8 | 32 |
| 2008 | 11 | 21 |
| 2009 | 8 | 26 |
| 2010 | 20 | 23 |
| 2011 | 19 | 19 |
| 2012 | 22 | 17 |
| 2013 | 16 | 8 |
| 2014 | 20 | 14 |
| 2015 | 11 | 18 |
| 2016 | 6 | 8 |
| 2017 | 11 | 21 |
| 2018 | 17 | 16 |
| 2019 | 14 | 21 |
| 2020 | 24 | 14 |
| 2021 | 18 | 17 |
| 2022 | 14 | 20 |
| 2023 | 13 | 37 |
| 2024 | 11 | 20 |
| 2025 | 19 | 26 |
| 2026 | 10 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Separator module for fuel cells and unit cell for fuel cells including the same21 Jul 2026US 12,689,041 B2Hyundai Motor Company
- Hydrogen fuel cell power source with metal bipolar plates16 Jun 2026US 12,658,462 B1The Government of the United States of America, as represented by the Secretary of the Navy
- Bipolar plate with media regulation and fuel cell stack2 Jun 2026US 12,646,725 B2Audi AG
- Power generation cell5 May 2026US 12,620,606 B2Honda Motor Co., Ltd.
- Bipolar plate with insertable diaphragm and fuel cell stack5 May 2026US 12,620,607 B2Audi AG
- Bipolar plate8 Oct 2026US 2026/0312085 A1Schaeffler Technologies AG & Co. KG
- Separator, electrochemical cell, stack and apparatus24 Sep 2026US 2026/0290854 A1Kabushiki Kaisha Toshiba
- Energy conversion arrangement with pre-heating duct for reactant gas, as well as energy system and apparatus comprising same27 Aug 2026US 2026/0253917 A1Airbus Operations GmbH
- Fuel cell stack27 Aug 2026US 2026/0253918 A1Toyota Boshoku Kabushiki Kaisha
- Redox flow battery system and stack thereof30 Jul 2026US 2026/0221483 A1CMBlu Energy AG
Most cited
By later US patents
- 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
- Electrochemical apparatus with reactant micro-channels90US 6,361,892 B1Technology Management, Inc. · 2002
- Arrangement of fuel cells based on a high-temperature solid electrolyte of stabilized zirconium oxide for achieving maximum possible power89US 5,034,288 AAsea Brown Boveri AG · 1991
- Fuel cell stack69US 4,444,851 AEnergy Research Corporation · 1984