C08G 73/18
Polybenzimidazoles
C08G73/18 (Polybenzimidazoles) appears on 421 US grants and 290 published applications in this corpus.
Search patents in C08G- Granted patents
- 421
- Published applications
- 290
- Assignees
- 190
- Inventors
- 808
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 9 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 10 | 0 |
| 1985 | 8 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 7 | 0 |
| 1989 | 12 | 0 |
| 1990 | 10 | 0 |
| 1991 | 14 | 0 |
| 1992 | 23 | 0 |
| 1993 | 12 | 0 |
| 1994 | 8 | 0 |
| 1995 | 5 | 0 |
| 1996 | 4 | 0 |
| 1997 | 9 | 0 |
| 1998 | 9 | 0 |
| 1999 | 13 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 2 |
| 2002 | 7 | 1 |
| 2003 | 4 | 5 |
| 2004 | 0 | 15 |
| 2005 | 2 | 10 |
| 2006 | 14 | 23 |
| 2007 | 9 | 14 |
| 2008 | 7 | 15 |
| 2009 | 7 | 15 |
| 2010 | 23 | 16 |
| 2011 | 10 | 15 |
| 2012 | 15 | 16 |
| 2013 | 11 | 33 |
| 2014 | 32 | 14 |
| 2015 | 17 | 13 |
| 2016 | 10 | 12 |
| 2017 | 13 | 14 |
| 2018 | 7 | 7 |
| 2019 | 10 | 6 |
| 2020 | 5 | 11 |
| 2021 | 3 | 8 |
| 2022 | 4 | 7 |
| 2023 | 5 | 7 |
| 2024 | 10 | 7 |
| 2025 | 6 | 2 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of forming a cross-linked polymeric membrane29 Sep 2026US 12,746,516 B2Seppure Pte Ltd
- Compositions for energy conversion and storage and methods of making the same2 Dec 2025US 12,489,131 B2Alliance for Sustainable Energy, LLC
- Metal-clad polymer films and electronic devices14 Oct 2025US 12,442,084 B2Dupont Electronics, Inc.
- Method for directly creating a film of 2D polymers from monomer solutions3 Jun 2025US 12,319,787 B2The United States of America as represented by the Secretary of the Army
- Polybenzimidazole-based electrolyte membrane for alkaline water electrolysis and water electrolysis device comprising the same18 Feb 2025US 12,227,858 B2Korea Institute of Science and Technology
- Negative photosensitive resin composition, dry film, cured product, and electronic component13 Aug 2026US 2026/0235951 A1Taiyo Holdings Co., Ltd.
- Tetra-coordinated boronic acid-functionalized polymers6 Aug 2026US 2026/0229572 A11s1 Energy, Inc.
- Binder, preparation method thereof and lithium-ion cell23 Oct 2025US 2025/0326891 A1Eve Energy Co., Ltd.
- Two dimensional polymers comprised of a combination of stiff and compliant molecular units23 Jan 2025US 2025/0026889 A1U.S. Government as represented by the Secretary of the Army
- Functionalized polybenzimidazole polymers for ionomer and proton exchange membrane applications21 Nov 2024US 2024/0382945 A11s1 Energy, Inc.
Most cited
By later US patents
- Liquid crystalline polymer compositions, process, and products117US 4,533,693 ASRI International · 1985
- Rigid rod polymer based on pyridobisimidazole90US 5,674,969 AAkzo Nobel N. V. · 1997
- Liquid crystalline polymer compositions, process, and products77US 4,533,692 ASRI International · 1985
- Optical coupling device and process for modulating light66US 5,845,025 AThe Trustees of the University of Pennsylvania · 1998
- Liquid crystalline poly (2,6-benzothiazole) compositions, process, and products60US 4,533,724 ASRI International · 1985