C08G 75/20
Polysulfones
C08G75/20 (Polysulfones) appears on 803 US grants and 642 published applications in this corpus.
Search patents in C08G- Granted patents
- 803
- Published applications
- 642
- Assignees
- 341
- Inventors
- 1,736
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 18 | 0 |
| 1978 | 15 | 0 |
| 1979 | 6 | 0 |
| 1980 | 10 | 0 |
| 1981 | 12 | 0 |
| 1982 | 8 | 0 |
| 1983 | 11 | 0 |
| 1984 | 5 | 0 |
| 1985 | 9 | 0 |
| 1986 | 7 | 0 |
| 1987 | 13 | 0 |
| 1988 | 17 | 0 |
| 1989 | 25 | 0 |
| 1990 | 23 | 0 |
| 1991 | 29 | 0 |
| 1992 | 35 | 0 |
| 1993 | 35 | 0 |
| 1994 | 15 | 0 |
| 1995 | 15 | 0 |
| 1996 | 9 | 0 |
| 1997 | 7 | 0 |
| 1998 | 10 | 0 |
| 1999 | 14 | 0 |
| 2000 | 8 | 0 |
| 2001 | 10 | 2 |
| 2002 | 9 | 11 |
| 2003 | 8 | 9 |
| 2004 | 10 | 10 |
| 2005 | 5 | 16 |
| 2006 | 7 | 14 |
| 2007 | 9 | 21 |
| 2008 | 4 | 35 |
| 2009 | 11 | 29 |
| 2010 | 24 | 33 |
| 2011 | 17 | 29 |
| 2012 | 23 | 18 |
| 2013 | 23 | 21 |
| 2014 | 21 | 26 |
| 2015 | 24 | 32 |
| 2016 | 19 | 24 |
| 2017 | 21 | 40 |
| 2018 | 17 | 28 |
| 2019 | 33 | 50 |
| 2020 | 26 | 36 |
| 2021 | 32 | 29 |
| 2022 | 21 | 34 |
| 2023 | 19 | 23 |
| 2024 | 18 | 26 |
| 2025 | 16 | 26 |
| 2026 | 5 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Ammonium-functionalized polysulfone copolymers for moisture-swing CO2 capture22 Sep 2026US 12,741,265 B2Arizona Board of Regents on behalf of Arizona State University
- Bioactive compound immobilization on sulfone polymers16 Jun 2026US 12,655,255 B2Syensqo Specialty Polymers USA, LLC
- Post-polymerization and polymeric material modification through gold catalysis and polymeric materials2 Jun 2026US 12,643,969 B2The University of Southern Mississippi
- Sulfur-containing polymer, method for producing same, and sulfur-containing polymer composition21 Apr 2026US 12,606,675 B2Nippon Shokubai Co., Ltd.
- Resin composition, self-fusing insulated electric wire and wire bundle3 Mar 2026US 12,565,565 B2Sumitomo Electric Industries, Ltd.
- Method for producing organic lithium salt, composition containing said organic lithium salt, and polymer8 Oct 2026US 2026/0308118 A1Sumitomo Chemical Company, Limited
- Polyether Sulfone Copolymers and Articles Prepared Therefrom8 Oct 2026US 2026/0308326 A1Thermo Fisher Bioprocessing Inc.
- Method for preparing polysulfone resin through segmented polymerization10 Sep 2026US 2026/0265460 A1Shandong Horan Special Plastics Co ., Ltd
- Solution of polyarylsulfone polymers in n-(2'-hydroxyethyl)-2-pyrrolidone for membrane preparation and use3 Sep 2026US 2026/0258248 A1BASF SE
- Laminate and method for forming laminate20 Aug 2026US 2026/0241412 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Polyarylene polyethers168US 4,108,837 AUnion Carbide Corporation · 1978
- Polyarylene polyethers152US 4,175,175 AUnion Carbide Corporation · 1979
- Block copolymers131US 5,834,583 ACirce Biomedical, Inc. · 1998
- Thermoplastic aromatic polyetherketones129US 4,320,224 AImperial Chemical Industries PLC · 1982
- Polyarylether ketone imide sulfone adhesives118US 9,976,063 B2The Boeing Company · 2018