H01M 8/086
Phosphoric acid fuel cells [pafc]
Official title: Phosphoric acid fuel cells [PAFC]
H01M8/086 (Phosphoric acid fuel cells [pafc]) appears on 148 US grants and 234 published applications in this corpus.
Search patents in H01M- Granted patents
- 148
- Published applications
- 234
- Assignees
- 121
- Inventors
- 516
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 5 | 11 |
| 2004 | 0 | 6 |
| 2005 | 3 | 2 |
| 2006 | 5 | 20 |
| 2007 | 1 | 25 |
| 2008 | 4 | 17 |
| 2009 | 4 | 12 |
| 2010 | 10 | 20 |
| 2011 | 9 | 10 |
| 2012 | 13 | 18 |
| 2013 | 9 | 8 |
| 2014 | 13 | 10 |
| 2015 | 4 | 11 |
| 2016 | 10 | 7 |
| 2017 | 13 | 12 |
| 2018 | 9 | 10 |
| 2019 | 9 | 5 |
| 2020 | 3 | 6 |
| 2021 | 8 | 2 |
| 2022 | 4 | 4 |
| 2023 | 2 | 3 |
| 2024 | 3 | 5 |
| 2025 | 1 | 7 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Compositions for energy conversion and storage and methods of making the same2 Dec 2025US 12,489,131 B2Alliance for Sustainable Energy, LLC
- Fuel cell catalyst composition and fuel cell containing same24 Dec 2024US 12,176,548 B2Toyo University
- Drive system, and motor vehicle26 Nov 2024US 12,151,568 B2Schaeffler Technologies AG & Co. KG
- Fuel cells incorporating silica fibers2 Jul 2024US 12,027,737 B2American Nano, LLC
- Fuel cells incorporating silica fibers27 Jun 2023US 11,688,873 B2American Nano, LLC
- Power plant systems and methods of operation associated with varied hydrogen purity1 Jan 2026US 2026/0005274 A1Hyaxiom, Inc.
- Phosphate-tolerant core-shell catalysts nanoparticles for high temperature fuel cells and fuel cells with the same16 Oct 2025US 2025/0323283 A1Toyota Jidosha Kabushiki Kaisha
- Advanced Hydrogen Fuel Cell18 Sep 2025US 2025/0293278 A1
- Stackable electro-synthetic or electro-energy cells21 Aug 2025US 2025/0266470 A1Hysata Pty Ltd
- Platinum-palladium alloy catalyst to enhance performance in fuel cells containing phosphoric acid or phosphonated ionomer10 Apr 2025US 2025/0118772 A1Toyota Jidosha Kabushiki Kaisha
Most cited
By later US patents
- Finely particulated colloidal platinum compound and sol for producing the same, and method of preparation of fuel cell electrodes and the like employing the same55US 4,044,193 APrototech Company · 1977
- Method and apparatus for operating a fuel cell system49US 6,093,500 AInternational Fuel Cells Corporation · 2000
- Fuel cell, components and systems42US 7,488,547 B12009
- Basic polymer electrolyte fuel cell40US 6,986,962 B2Honda Giken Kogyo Kabushiki Kaisha · 2006
- Power system for more electric aircraft35US 10,913,543 B2GE Aviation Systems LLC · 2021