H01M 8/04149
By diffusion
Official title: {by diffusion, e.g. making use of membranes}
H01M8/04149 (By diffusion) appears on 300 US grants and 504 published applications in this corpus.
Search patents in H01M- Granted patents
- 300
- Published applications
- 504
- Assignees
- 137
- Inventors
- 774
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 3 |
| 2002 | 2 | 3 |
| 2003 | 4 | 3 |
| 2004 | 1 | 5 |
| 2005 | 1 | 14 |
| 2006 | 2 | 12 |
| 2007 | 7 | 18 |
| 2008 | 7 | 25 |
| 2009 | 6 | 23 |
| 2010 | 7 | 17 |
| 2011 | 18 | 26 |
| 2012 | 15 | 16 |
| 2013 | 16 | 13 |
| 2014 | 11 | 21 |
| 2015 | 22 | 22 |
| 2016 | 7 | 14 |
| 2017 | 16 | 18 |
| 2018 | 17 | 11 |
| 2019 | 7 | 15 |
| 2020 | 12 | 21 |
| 2021 | 15 | 26 |
| 2022 | 19 | 25 |
| 2023 | 18 | 24 |
| 2024 | 20 | 73 |
| 2025 | 15 | 27 |
| 2026 | 30 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hollow fiber membrane material for high-humidification hydrogen fuel cell humidifier and preparation method and application thereof6 Oct 2026US 12,753,530 B2University of Electronic Science and Technology of China
- Hollow fiber membrane module29 Sep 2026US 12,746,514 B2Nok Corporation
- Cartridge of fuel cell humidifier, and fuel cell humidifier29 Sep 2026US 12,746,515 B2Kolon Industries, Inc.
- Fuel cell membrane humidifier22 Sep 2026US 12,744,227 B2Kolon Industries, Inc.
- Fuel cell membrane humidifier1 Sep 2026US 12,725,813 B2Kolon Industries, Inc.
- Hollow fiber membrane module8 Oct 2026US 2026/0307014 A1Nok Corporation
- Hollow fiber membranes comprising a poly(aryl ether sulfone) and a water-soluble polymer additive1 Oct 2026US 2026/0295540 A1BASF SE
- Stack plate, stack plate device and humidifier1 Oct 2026US 2026/0302280 A1Mann+Hummel GmbH
- Humidification system and fuel cell system17 Sep 2026US 2026/0279856 A1Honda Motor Co., Ltd.
- Cartridge for fuel cell humidifier, and fuel cell humidifier10 Sep 2026US 2026/0269285 A1Kolon Industries, Inc.
Most cited
By later US patents
- Surface replica fuel cell for micro fuel cell electrical power pack208US 5,759,712 A1998
- Plate and frame fluid exchanging assembly with unitary plates and seals102US 6,171,374 B2Ballard Power Systems Inc. · 2001
- Cross-pleated membrane cartridges, and method and apparatus for making cross-pleated membrane cartridges39US 8,157,891 B2DPoint Technologies Inc. · 2012
- Humidifier membrane34US 8,137,436 B2Lydall Solutech B.V. · 2012
- Humidifier for a fuel cell33US 8,968,945 B2Mann+Hummel GmbH · 2015