C08G 75/0281
Recovery or purification
C08G75/0281 (Recovery or purification) appears on 151 US grants and 77 published applications in this corpus.
Search patents in C08G- Granted patents
- 151
- Published applications
- 77
- Assignees
- 38
- Inventors
- 239
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 11 | 0 |
| 1989 | 12 | 0 |
| 1990 | 12 | 0 |
| 1991 | 11 | 0 |
| 1992 | 9 | 0 |
| 1993 | 7 | 0 |
| 1994 | 7 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 1 |
| 2004 | 2 | 1 |
| 2005 | 1 | 6 |
| 2006 | 2 | 2 |
| 2007 | 3 | 2 |
| 2008 | 1 | 0 |
| 2009 | 1 | 0 |
| 2010 | 2 | 4 |
| 2011 | 1 | 2 |
| 2012 | 2 | 0 |
| 2013 | 2 | 3 |
| 2014 | 1 | 1 |
| 2015 | 2 | 2 |
| 2016 | 1 | 7 |
| 2017 | 3 | 6 |
| 2018 | 4 | 5 |
| 2019 | 2 | 7 |
| 2020 | 3 | 4 |
| 2021 | 3 | 8 |
| 2022 | 7 | 4 |
| 2023 | 3 | 7 |
| 2024 | 4 | 1 |
| 2025 | 2 | 2 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polyarylene sulfide production method17 Feb 2026US 12,552,901 B2Kureha Corporation
- Polydisulfide polymer17 Feb 2026US 12,552,935 B2HighRI Optics, Inc.
- Polyarylene sulfide, and purification method and production method therefor13 Jan 2026US 12,522,697 B2DIC Corporation
- Method for producing polyarylene sulfide30 Dec 2025US 12,509,555 B2Kureha Corporation
- Composite structure and manufacturing method thereof6 May 2025US 12,291,605 B2DIC Corporation
- Random Copolymer28 May 2026US 2026/0146159 A1HighRI Optics, Inc.
- Separation method and liquid production method31 Jul 2025US 2025/0242331 A1DIC Corporation
- Method for manufacturing high-reactivity polyphenylene sulfide resin and product manufactured thereby17 Jul 2025US 2025/0230284 A1Zhejiang Nhu Company Ltd.
- Polydisulfide Polymer11 Jul 2024US 2024/0228780 A1Abeam Technology Co., Ltd.
- Polyarylene sulfide production method22 Jun 2023US 2023/0192958 A1Kureha Corporation
Most cited
By later US patents
- Process for production of high to ultra-high molecular weight linear polyarylenesulfides99US 4,645,826 AKureha Kagaku Kogyo Kabushiki Kaisha · 1987
- Recovering granular poly(arylene sulfide) particles from a poly(arylene sulfide) reaction mixture62US 4,415,729 APhillips Petroleum Company · 1983
- Process for cleaning thermoplasts by friction compacting53US 5,306,803 ABayer Aktiengesellschaft · 1994
- Process for producing poly(arylene sulfide) of reduced alkali metal content44US 4,814,430 AKureha Kagaku Kogyo Kabushiki Kaisha · 1989
- Arylene sulfide polymer preparation from dehydrated admixture comprising sulfur source, cyclic amide solvent and water38US 4,767,841 APhillips Petroleum Company · 1988