C08L 81/06
Polysulfones
Official title: Polysulfones; Polyethersulfones
C08L81/06 (Polysulfones) appears on 746 US grants and 706 published applications in this corpus.
Search patents in C08L- Granted patents
- 746
- Published applications
- 706
- Assignees
- 375
- Inventors
- 1,813
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 7 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 7 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 11 | 0 |
| 1986 | 7 | 0 |
| 1987 | 8 | 0 |
| 1988 | 12 | 0 |
| 1989 | 21 | 0 |
| 1990 | 21 | 0 |
| 1991 | 23 | 0 |
| 1992 | 24 | 0 |
| 1993 | 20 | 0 |
| 1994 | 11 | 0 |
| 1995 | 10 | 0 |
| 1996 | 10 | 0 |
| 1997 | 10 | 0 |
| 1998 | 21 | 0 |
| 1999 | 15 | 0 |
| 2000 | 17 | 0 |
| 2001 | 11 | 4 |
| 2002 | 13 | 10 |
| 2003 | 10 | 21 |
| 2004 | 8 | 25 |
| 2005 | 5 | 18 |
| 2006 | 16 | 22 |
| 2007 | 10 | 15 |
| 2008 | 9 | 29 |
| 2009 | 7 | 35 |
| 2010 | 15 | 39 |
| 2011 | 20 | 33 |
| 2012 | 21 | 39 |
| 2013 | 28 | 31 |
| 2014 | 31 | 25 |
| 2015 | 34 | 33 |
| 2016 | 21 | 25 |
| 2017 | 19 | 24 |
| 2018 | 20 | 44 |
| 2019 | 16 | 49 |
| 2020 | 26 | 36 |
| 2021 | 29 | 33 |
| 2022 | 27 | 34 |
| 2023 | 25 | 25 |
| 2024 | 17 | 23 |
| 2025 | 19 | 21 |
| 2026 | 6 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Blend of polyarylether ketone copolymer6 Oct 2026US 12,753,305 B2Syensqo Specialty Polymers USA, LLC
- Translucent magazine for a firearm8 Sep 2026US 12,729,923 B2Magpul Industries Corp.
- Polyimide resin composition and molded body1 Sep 2026US 12,723,156 B2Mitsubishi Gas Chemical Company, Inc.
- Porous membranes for high pressure filtration7 Jul 2026US 12,673,303 B2Syensqo Specialty Polymers USA, LLC
- Prepreg19 May 2026US 12,630,679 B2Toray Industries, Inc.
- Elastic sulfonated styrene diene block copolymers8 Oct 2026US 2026/0308343 A1Rensselaer Polytechnic Institute
- 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.
- Semipermeable membrane and semipermeable membrane module30 Jul 2026US 2026/0216670 A1Toyobo Co., Ltd.
- Preheating and thermoforming polysulfone film into dental aligners16 Jul 2026US 2026/0199061 A1Bixby International Corporation
Most cited
By later US patents
- Plastic surgical staple1,925US 4,317,451 AEthicon, Inc. · 1982
- Kink-free spiral-wound catheter385US 5,454,795 ATarget Therapeutics, Inc. · 1995
- Joint320US 6,332,733 B1Hamberger Industriewerke GmbH · 2001
- Kink-free spiral-wound catheter259US 5,695,483 ATarget Therapeutics, Inc. · 1997
- Ammunition casing244US 8,240,252 B22012