H01M 8/1025
Having only carbon and oxygen
Official title: having only carbon and oxygen, e.g. polyethers, sulfonated polyetheretherketones [S-PEEK], sulfonated polysaccharides, sulfonated celluloses or sulfonated polyesters
H01M8/1025 (Having only carbon and oxygen) appears on 505 US grants and 748 published applications in this corpus.
Search patents in H01M- Granted patents
- 505
- Published applications
- 748
- Assignees
- 310
- Inventors
- 1,423
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 3 |
| 2002 | 5 | 13 |
| 2003 | 5 | 18 |
| 2004 | 11 | 47 |
| 2005 | 13 | 49 |
| 2006 | 20 | 74 |
| 2007 | 17 | 79 |
| 2008 | 23 | 40 |
| 2009 | 27 | 63 |
| 2010 | 49 | 61 |
| 2011 | 50 | 45 |
| 2012 | 39 | 34 |
| 2013 | 36 | 19 |
| 2014 | 22 | 18 |
| 2015 | 22 | 21 |
| 2016 | 16 | 15 |
| 2017 | 22 | 29 |
| 2018 | 13 | 9 |
| 2019 | 18 | 11 |
| 2020 | 9 | 9 |
| 2021 | 16 | 9 |
| 2022 | 5 | 19 |
| 2023 | 8 | 17 |
| 2024 | 10 | 19 |
| 2025 | 15 | 15 |
| 2026 | 5 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Block copolymer, production method therefor, polymeric electrolyte material, polymeric electrolyte molded article, polymeric electrolyte film, electrolyte film equipped with catalyst layer, membrane electrode composite, solid polymer fuel cell, and water electrolysis type hydrogen generating device25 Aug 2026US 12,715,962 B2Toray Industries, Inc.
- Fluorine-containing compound having sulfonic acid group and polymer electrolyte fuel cell25 Aug 2026US 12,719,070 B2Nissan Chemical Corporation
- Antioxidant substituted sulfonated ion exchange membranes12 May 2026US 12,626,944 B2The Lubrizol Corporation
- Ion selective membranes for organic electrochemical processes14 Apr 2026US 12,600,858 B2University of Virginia Patent Foundation
- Proton exchange membranes for electrochemical reactions3 Mar 2026US 12,567,598 B2Uop LLC
- Patterned alkaline exchange membranes13 Aug 2026US 2026/0234309 A1Ecolectro, Inc
- Polymer, electrolyte material, electrolyte membrane, electrolyte membrane with catalyst layer, membrane electrode assembly, solid polymer fuel cell, and solid polymer water electrolysis device13 Aug 2026US 2026/0237705 A1Tosoh Corporation
- Electrode materials for membrane electrode assembly6 Aug 2026US 2026/0229552 A1Ecolectro, Inc
- Hydroxide ion-conductive membrane, method for producing hydroxide ion-conductive membrane, membrane electrode assembly, method for producing hydrogen, and hydrogen production system25 Jun 2026US 2026/0176779 A1FUJIFILM Corporation
- Polymer electrolyte membrane, method for manufacturing same, and membrane-electrode assembly comprising same4 Jun 2026US 2026/0155417 A1Kolon Industries, Inc.
Most cited
By later US patents
- Composite solid polymer electrolyte membranes346US 7,550,216 B2Foster-Miller, Inc. · 2009
- Membrane electrode assemblies115US 5,910,378 AMinnesota Mining and Manufacturing Company · 1999
- Polymer electrolyte membrane, and process for the production thereof109US 5,438,082 AHoechst Aktiengesellschaft · 1995
- Sulfonated polymers for solid polymer electrolytes99US 5,403,675 AMaxdem Incorporated · 1995
- Polymer material for electrolytic membranes in fuel cells83US 5,795,496 ACalifornia Institute of Technology · 1998