H01M 8/04828
Humidity
Official title: Humidity; Water content
H01M8/04828 (Humidity) appears on 555 US grants and 813 published applications in this corpus.
Search patents in H01M- Granted patents
- 555
- Published applications
- 813
- Assignees
- 224
- Inventors
- 1,519
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 4 |
| 2002 | 4 | 12 |
| 2003 | 4 | 8 |
| 2004 | 7 | 14 |
| 2005 | 8 | 16 |
| 2006 | 9 | 22 |
| 2007 | 8 | 30 |
| 2008 | 10 | 24 |
| 2009 | 9 | 32 |
| 2010 | 16 | 46 |
| 2011 | 17 | 40 |
| 2012 | 27 | 23 |
| 2013 | 24 | 28 |
| 2014 | 28 | 61 |
| 2015 | 28 | 30 |
| 2016 | 35 | 31 |
| 2017 | 38 | 42 |
| 2018 | 34 | 30 |
| 2019 | 37 | 56 |
| 2020 | 42 | 39 |
| 2021 | 36 | 32 |
| 2022 | 41 | 33 |
| 2023 | 27 | 52 |
| 2024 | 19 | 34 |
| 2025 | 17 | 37 |
| 2026 | 26 | 37 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fuel cell vehicle with differential pressure flow meter for humidity measurement6 Oct 2026US 12,752,667 B2Ford Global Technologies, LLC
- Method and system for dynamically modifying fuel cell stack current to manage fuel cell membrane hydration29 Sep 2026US 12,749,697 B2Ford Global Technologies, LLC
- High-temperature anion-exchange membrane fuel cell15 Sep 2026US 12,738,518 B2Technion Research & Development Foundation Limited
- Fuel cell system capable of adjusting bypass flow rate15 Sep 2026US 12,738,519 B2Kolon Industries, Inc.
- Dimensional fluid mapping systems with multi-frequency excitation18 Aug 2026US 12,710,314 B2Robert Bosch GmbH
- Fuel cell system with improved humidifier8 Oct 2026US 2026/0312088 A1Plastic Omnium New Energies France
- Conditioning method and conditioning device8 Oct 2026US 2026/0312092 A1Robert Bosch GmbH
- Gas-liquid separation device and fuel cell system1 Oct 2026US 2026/0302281 A1Honda Motor Co., Ltd.
- Fuel cell activation device1 Oct 2026US 2026/0302287 A1Honda Motor Co., Ltd.
- Swelling reduction system1 Oct 2026US 2026/0302291 A1Subaru Corporation
Most cited
By later US patents
- Hydrocarbon fueled solid polymer fuel cell electric power generation system168US 5,360,679 ABallard Power Systems Inc. · 1994
- Proton exchange membrane fuel cell power system111US 6,030,718 AAvista Corporation · 2000
- Fuel cell with proton conducting membrane97US 6,492,047 B1Ramot University Authority for Applied Research and Industrial Development Ltd. · 2002
- Fuel-cells generator system and method of generating electricity from fuel cells75US 5,925,476 AToyota Jidosha Kabushiki Kaisha · 1999
- Proton exchange membrane fuel cell power system63US 6,218,035 B1Avista Laboratories, Inc. · 2001