C08G 65/44
By oxidation of phenols
Official title: by oxidation of phenols
C08G65/44 (By oxidation of phenols) appears on 260 US grants and 144 published applications in this corpus.
Search patents in C08G- Granted patents
- 260
- Published applications
- 144
- Assignees
- 97
- Inventors
- 487
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 11 | 0 |
| 1978 | 19 | 0 |
| 1979 | 1 | 0 |
| 1980 | 11 | 0 |
| 1981 | 4 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 14 | 0 |
| 1985 | 5 | 0 |
| 1986 | 10 | 0 |
| 1987 | 7 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 2 |
| 2002 | 12 | 8 |
| 2003 | 5 | 4 |
| 2004 | 4 | 3 |
| 2005 | 2 | 5 |
| 2006 | 2 | 3 |
| 2007 | 6 | 11 |
| 2008 | 2 | 8 |
| 2009 | 4 | 9 |
| 2010 | 7 | 2 |
| 2011 | 5 | 9 |
| 2012 | 5 | 8 |
| 2013 | 8 | 2 |
| 2014 | 5 | 5 |
| 2015 | 4 | 3 |
| 2016 | 2 | 5 |
| 2017 | 4 | 1 |
| 2018 | 1 | 5 |
| 2019 | 6 | 8 |
| 2020 | 8 | 11 |
| 2021 | 5 | 4 |
| 2022 | 6 | 4 |
| 2023 | 4 | 7 |
| 2024 | 3 | 7 |
| 2025 | 1 | 5 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for preparing polyphenylene oxide22 Sep 2026US 12,742,043 B2LG Chem.Ltd.
- Polyphenylene ether, production method of the same, thermosetting composition, prepreg, and laminate15 Sep 2026US 12,735,531 B2Asahi Kasei Kabushiki Kaisha
- PPO based film with high surface area and procedures for the obtainment thereof17 Mar 2026US 12,576,366 B2MATERIAS S.r.l.
- Polyphenylene ether composition23 Sep 2025US 12,421,349 B2Asahi Kasei Kabushiki Kaisha
- Method for producing polyphenylene ether amine8 Oct 2024US 12,110,365 B2Nan Ya Plastics Corporation
- Medium molecular weight poly(phenylene ether) and method for the manufacture thereof8 Oct 2026US 2026/0308321 A1Shpp Global Technologies B.V.
- Polyphenylene ether, curable composition containing polyphenylene ether, dry film, prepeg, cured product, and electronic component3 Sep 2026US 2026/0258197 A1Taiyo Holdings Co., Ltd.
- Oligomer, method for preparing oligomer, and method for preparing cured product of oligomer23 Jul 2026US 2026/0209435 A1CPC Corporation, Taiwan
- Linear block copolymer and curable thermosetting composition comprising the linear block copolymer14 May 2026US 2026/0132240 A1Shpp Global Technologies B.V.
- Polymeric materials8 Jan 2026US 2026/0009505 A1
Most cited
By later US patents
- Polyaromatic compounds and method for their production69US 6,150,491 AThe United States of America as represented by the Secretary of the Army · 2000
- Method for preparing polyphenylene ethers67US 4,092,294 AGeneral Electric Company · 1978
- Process for the preparation of polyphenylene oxides with hydrolytically stable copper catalysts58US 4,028,341 AGeneral Electric Company · 1977
- Polyphenylene ether resin comprising chloroform extractable/nonextractable polyphenylene ether resin49US 4,923,932 AAsahi Kasei Kogyo Kabushiki Kaisha · 1990
- Process for the preparation of bifunctional polyphenylene oxide42US 4,677,185 ABayer Aktiengesellschaft · 1987