C08G 64/28
And phenols
Official title: and phenols
C08G64/28 (And phenols) appears on 56 US grants and 40 published applications in this corpus.
Search patents in C08G- Granted patents
- 56
- Published applications
- 40
- Assignees
- 31
- Inventors
- 152
- Latest grant
- 12 May 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 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 3 |
| 2007 | 0 | 3 |
| 2008 | 2 | 0 |
| 2009 | 1 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 2 | 2 |
| 2014 | 0 | 3 |
| 2015 | 3 | 3 |
| 2016 | 5 | 4 |
| 2017 | 1 | 3 |
| 2018 | 3 | 1 |
| 2019 | 0 | 1 |
| 2020 | 2 | 2 |
| 2021 | 0 | 4 |
| 2022 | 2 | 0 |
| 2023 | 2 | 1 |
| 2024 | 1 | 3 |
| 2025 | 0 | 1 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polycarbonate copolymer12 May 2026US 12,624,162 B2Lm Chem, Ltd.
- Polycarbonate copolymer and method for preparing the same7 Apr 2026US 12,595,335 B2LG Chem.Ltd.
- Diol compound, polycarbonate, and preparation method of the same30 Jan 2024US 11,884,777 B2LG Chem.Ltd.
- Polycarbonate and preparation method thereof18 Jul 2023US 11,702,506 B2LG Chem.Ltd.
- Sulfur-stabilized copolycarbonates and articles formed therefrom16 May 2023US 11,649,322 B2Shpp Global Technologies B.V.
- Polycarbonate-based resin composition and molded article8 Oct 2026US 2026/0308318 A1Idemitsu Kosan Co., Ltd.
- Electronic substrate material, resin, and method for manufactoring resin10 Sep 2026US 2026/0265573 A1Idemitsu Kosan Co., Ltd.
- Aromatic polycarbonate resin composition and molded article thereof2 Apr 2026US 2026/0092167 A1Teijin Limited
- Polycarbonate with phenolic building blocks and low chlorine content9 Oct 2025US 2025/0313665 A1Covestro Deutschland AG
- Process for preparing bisphenol a (bpa) in the presence of cumene5 Sep 2024US 2024/0294452 A1Covestro Deutschland AG
Most cited
By later US patents
- Thermoplastic polycarbonates, their preparation and their use as shaped articles and films43US 4,506,066 ABayer Aktiengesellschaft · 1985
- Method for polymerizing aromatic bischloroformate composition to polycarbonate35US 4,737,573 AGeneral Electric Company · 1988
- Crosslinkable polycyclic polycarbonate oligomer and methods for their preparation and use33US 4,888,411 AGeneral Electric Company · 1989
- Mixtures of cyclic oligocarbonates and their manufacture28US 5,786,440 ABayer Aktiengesellschaft · 1998
- Method for preparing polycarbonate of controlled molecular weight from aromatic bischloroformate14US 4,743,676 AGeneral Electric Company · 1988