H01M 8/04783
Pressure differences
Official title: {Pressure differences, e.g. between anode and cathode}
H01M8/04783 (Pressure differences) appears on 142 US grants and 207 published applications in this corpus.
Search patents in H01M- Granted patents
- 142
- Published applications
- 207
- Assignees
- 86
- Inventors
- 468
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2001 | 0 | 1 |
| 2002 | 3 | 4 |
| 2003 | 3 | 2 |
| 2004 | 1 | 10 |
| 2005 | 3 | 7 |
| 2006 | 4 | 7 |
| 2007 | 3 | 8 |
| 2008 | 3 | 10 |
| 2009 | 3 | 9 |
| 2010 | 4 | 8 |
| 2011 | 4 | 8 |
| 2012 | 5 | 3 |
| 2013 | 8 | 8 |
| 2014 | 9 | 6 |
| 2015 | 6 | 5 |
| 2016 | 6 | 11 |
| 2017 | 5 | 6 |
| 2018 | 10 | 6 |
| 2019 | 4 | 11 |
| 2020 | 9 | 12 |
| 2021 | 12 | 9 |
| 2022 | 5 | 12 |
| 2023 | 11 | 18 |
| 2024 | 8 | 6 |
| 2025 | 9 | 11 |
| 2026 | 4 | 9 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Fuel cell system12 May 2026US 12,626,943 B2Honda Motor Co., Ltd.
- Anode recovery system of fuel cell27 Jan 2026US 12,537,208 B2Asia Hydrogen Energy
- Method for diagnosing deterioration of fuel cell and method and system for preventing deterioration of fuel cell using the same27 Jan 2026US 12,537,209 B2Hyundai Motor Company
- Method for diagnosing valve failure of fuel cell system6 Jan 2026US 12,519,118 B2Hyundai Motor Company
- Hydrogen generation system and regulator therefor2 Dec 2025US 12,486,583 B2Green Fuel, LLC
- Ai driven vfd control for securing membrane in flow batteries8 Oct 2026US 2026/0312097 A1ViZn Energy Systems, Inc.
- Apparatus for Controlling Valve of Fuel Cell System, Method Thereof and Vehicle Including Same1 Oct 2026US 2026/0302296 A1Hyundai Motor Company
- Balance-of-plant for electro-synthetic or electro-energy liquid-gas cells or cell stacks10 Sep 2026US 2026/0269283 A1Hysata Pty Ltd
- Fuel cell system including cathode exhaust restrictor plate27 Aug 2026US 2026/0253923 A1Bloom Energy Corporation
- Fuel-cell system shutdown27 Aug 2026US 2026/0253925 A1Ford Global Technologies, LLC
Most cited
By later US patents
- Fuel cell with proton conducting membrane97US 6,492,047 B1Ramot University Authority for Applied Research and Industrial Development Ltd. · 2002
- Uninterruptible power supplies using fuel cells62US 6,602,627 B2Alpha Technologies Inc. · 2003
- Fuel cell with proton conducting membrane with a pore size less than 30 nm56US 6,447,943 B1Ramot University Authority for Applied Research and Industrial Development Ltd. · 2002
- Combined power generation system and unit, method, and program for controlling the same34US 9,666,888 B2Mitsubishi Hitachi Power Systems, Ltd. · 2017
- Temperature zones in a solid oxide fuel cell auxiliary power unit32US 7,279,243 B2Delphi Technologies, Inc. · 2007