C08G 63/19
Hydroxy compounds containing aromatic rings
C08G63/19 (Hydroxy compounds containing aromatic rings) appears on 517 US grants and 335 published applications in this corpus.
Search patents in C08G- Granted patents
- 517
- Published applications
- 335
- Assignees
- 222
- Inventors
- 1,271
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 5 | 0 |
| 1978 | 18 | 0 |
| 1979 | 5 | 0 |
| 1980 | 18 | 0 |
| 1981 | 20 | 0 |
| 1982 | 13 | 0 |
| 1983 | 18 | 0 |
| 1984 | 17 | 0 |
| 1985 | 10 | 0 |
| 1986 | 11 | 0 |
| 1987 | 7 | 0 |
| 1988 | 5 | 0 |
| 1989 | 18 | 0 |
| 1990 | 22 | 0 |
| 1991 | 26 | 0 |
| 1992 | 21 | 0 |
| 1993 | 14 | 0 |
| 1994 | 10 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 8 | 0 |
| 1998 | 11 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 7 | 0 |
| 2002 | 5 | 5 |
| 2003 | 5 | 6 |
| 2004 | 6 | 12 |
| 2005 | 3 | 7 |
| 2006 | 4 | 12 |
| 2007 | 6 | 11 |
| 2008 | 3 | 4 |
| 2009 | 6 | 7 |
| 2010 | 5 | 7 |
| 2011 | 8 | 10 |
| 2012 | 3 | 8 |
| 2013 | 7 | 13 |
| 2014 | 14 | 11 |
| 2015 | 18 | 8 |
| 2016 | 10 | 10 |
| 2017 | 2 | 11 |
| 2018 | 8 | 18 |
| 2019 | 14 | 20 |
| 2020 | 19 | 23 |
| 2021 | 9 | 17 |
| 2022 | 13 | 13 |
| 2023 | 8 | 25 |
| 2024 | 11 | 33 |
| 2025 | 10 | 24 |
| 2026 | 11 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Laminate, multilayer board, and manufacturing method of laminate14 Jul 2026US 12,679,927 B2Azotek Co., Ltd.
- Polyarylate resin and electrophotographic photosensitive member14 Jul 2026US 12,681,396 B2KYOCERA Document Solutions Inc.
- Ester compound and resin composition7 Jul 2026US 12,674,019 B2Ajinomoto Co., Inc.
- Method for producing polyester resin by using regenerated bis(2-hydroxyethyl) terephthalate aqueous solution23 Jun 2026US 12,662,585 B2SK Chemicals Co., Ltd.
- Resin produced by polycondensation, and resin composition26 May 2026US 12,637,540 B2Mitsubishi Gas Chemical Company, Inc.
- Macro-cyclic polyester oligomers produced directly from diols and aromatic dicarboxylic acids, and related methods17 Sep 2026US 2026/0275033 A1JM Mihalich LLC
- Sulfur-containing heterocyclic compounds and thermoplastic resins20 Aug 2026US 2026/0242539 A1Mitsubishi Gas Chemical Company, Inc.
- Method for storing recycled bis(2-hydroxyethyl)terephthalate and method for preparing polyester resin20 Aug 2026US 2026/0242561 A1SK Chemicals Co., Ltd.
- Novel polyester compositions containing ethylene glycol residues and improved processes for making polyesters from oligomeric ethylene terephthalate13 Aug 2026US 2026/0234323 A1Eastman Chemical Company
- Polyester resin, resin composition for cosmetic containers, molded articles, and cosmetic containers23 Jul 2026US 2026/0206948 A1Mitsubishi Gas Chemical Company, Inc.
Most cited
By later US patents
- Thermally stable, rigid dibasic acids137US 4,096,341 AE. I. Du Pont de Nemours and Company · 1978
- Aromatic copolyester capable of forming an optically anisotropic melt127US 4,118,372 AE. I. Du Pont de Nemours and Company · 1978
- Polyesters of derivatives of hydroquinone and bis(carboxyphenyl)ether93US 3,991,014 AE. I. Du Pont de Nemours and Company · 1976
- Polyester compositions containing the residue of a naphthopyran compound and shaped articles produced therefrom79US 4,892,923 AEastman Kodak Company · 1990
- Thermally stable polymers, method of preparation, and articles made therefrom77US 6,306,507 B1General Electric Company · 2001