H01M 8/103
Having nitrogen
Official title: having nitrogen, e.g. sulfonated polybenzimidazoles [S-PBI], polybenzimidazoles with phosphoric acid, sulfonated polyamides [S-PA] or sulfonated polyphosphazenes [S-PPh]
H01M8/103 (Having nitrogen) appears on 595 US grants and 880 published applications in this corpus.
Search patents in H01M- Granted patents
- 595
- Published applications
- 880
- Assignees
- 374
- Inventors
- 1,693
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 3 |
| 2002 | 6 | 13 |
| 2003 | 4 | 21 |
| 2004 | 10 | 35 |
| 2005 | 9 | 47 |
| 2006 | 18 | 77 |
| 2007 | 18 | 81 |
| 2008 | 24 | 64 |
| 2009 | 29 | 53 |
| 2010 | 57 | 69 |
| 2011 | 54 | 59 |
| 2012 | 49 | 61 |
| 2013 | 42 | 35 |
| 2014 | 39 | 21 |
| 2015 | 37 | 21 |
| 2016 | 25 | 23 |
| 2017 | 24 | 24 |
| 2018 | 19 | 13 |
| 2019 | 16 | 15 |
| 2020 | 17 | 16 |
| 2021 | 18 | 20 |
| 2022 | 8 | 15 |
| 2023 | 13 | 22 |
| 2024 | 8 | 38 |
| 2025 | 16 | 19 |
| 2026 | 13 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Method for manufacturing membrane electrode assembly8 Sep 2026US 12,731,803 B2Denso Corporation
- 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.
- Anion exchange polymers and membranes for electrolysis25 Aug 2026US 12,715,968 B2Uop LLC
- Composite high-temperature proton exchange membrane for fuel cell, preparation method therefor and use thereof25 Aug 2026US 12,719,071 B2Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- Membrane electrode assembly24 Sep 2026US 2026/0290850 A1Kabushiki Kaisha Toyota Chuo Kenkyusho
- Membrane electrode assembly24 Sep 2026US 2026/0290851 A1Kabushiki Kaisha Toyota Chuo Kenkyusho
- Anion exchange polymer comprising 4-x-quinuclidinium structure, method for preparing same, and anion exchange membrane comprising same27 Aug 2026US 2026/0249282 A1Hd Hyundai Oilbank Co., Ltd.
- Patterned alkaline exchange membranes13 Aug 2026US 2026/0234309 A1Ecolectro, Inc
- High-temperature proton exchange membrane, preparation method and use thereof13 Aug 2026US 2026/0237706 A1China Northern Re (Group) High-Tech Co., Ltd.
Most cited
By later US patents
- Composite solid polymer electrolyte membranes346US 7,550,216 B2Foster-Miller, Inc. · 2009
- Proton conducting polymers used as membranes200US 5,525,436 ACase Western Reserve University · 1996
- Composite solid polymer electrolyte membranes158US 6,248,469 B1Foster-Miller, Inc. · 2001
- Acid-modified polybenzimidazole fuel cell elements63US 5,599,639 AHoechst Celanese Corporation · 1997
- Fuel cell with integral fuel storage63US 6,080,501 AMotorola, Inc. · 2000