C25B 9/05
Pressure cells
C25B9/05 (Pressure cells) appears on 373 US grants and 567 published applications in this corpus.
Search patents in C25B- Granted patents
- 373
- Published applications
- 567
- Assignees
- 281
- Inventors
- 1,087
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 2 |
| 2002 | 2 | 6 |
| 2003 | 5 | 6 |
| 2004 | 3 | 6 |
| 2005 | 2 | 8 |
| 2006 | 4 | 9 |
| 2007 | 3 | 7 |
| 2008 | 4 | 8 |
| 2009 | 4 | 8 |
| 2010 | 4 | 21 |
| 2011 | 6 | 20 |
| 2012 | 11 | 24 |
| 2013 | 7 | 17 |
| 2014 | 20 | 28 |
| 2015 | 18 | 20 |
| 2016 | 17 | 24 |
| 2017 | 17 | 22 |
| 2018 | 20 | 22 |
| 2019 | 20 | 41 |
| 2020 | 20 | 27 |
| 2021 | 19 | 30 |
| 2022 | 25 | 36 |
| 2023 | 18 | 40 |
| 2024 | 22 | 53 |
| 2025 | 32 | 53 |
| 2026 | 11 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electrolyzer stack end plate assembly with fluid-isolating insert(s)11 Aug 2026US 12,703,920 B2Plug Power Inc.
- Electrolysis system and method of use thereof16 Jun 2026US 12,655,531 B2Asahi Kasei Kabushiki Kaisha
- Electrochemical hydrogen pump2 Jun 2026US 12,644,191 B2Panasonic Intellectual Property Management Co., Ltd.
- Compression apparatus12 May 2026US 12,624,465 B2Panasonic Intellectual Property Management Co., Ltd.
- Electrochemical inert gas and power generating system and method28 Apr 2026US 12,612,175 B2Hamilton Sundstrand Corporation
- System and Methods for Controlling Material Synthesis via Electrochemical Reactions8 Oct 2026US 2026/0308774 A1Quantom Corporation
- Electrolyte Solution for Reversible CO2 Capture and Electrochemical Conversion24 Sep 2026US 2026/0286540 A1UNM Rainforest Innovations
- Balance-of-plant for electro-synthetic or electro-energy liquid-gas cells or cell stacks10 Sep 2026US 2026/0269283 A1Hysata Pty Ltd
- Tie rod spring assembly for an electrochemical system3 Sep 2026US 2026/0260923 A1New Hydrogen IP, LLC
- Differential pressure electrolysis cell and differential pressure electrolysis stack27 Aug 2026US 2026/0250855 A1Honda Motor Co., Ltd.
Most cited
By later US patents
- High pressure electrolyzer module197US 6,554,978 B1Vandenborre Technologies NV · 2003
- Electrochemical load management system for transportation applications86US 5,346,778 AEnergy Partners, Inc. · 1994
- Hydrogen and oxygen gas generating system69US 5,690,797 AMitsubishi Corporation · 1997
- Internal combustion engine52US 4,271,793 A1981
- Electrochemical cell frame49US 6,099,716 AProton Energy Systems, Inc. · 2000