C08G 64/04
Aromatic polycarbonates
C08G64/04 (Aromatic polycarbonates) appears on 1,360 US grants and 968 published applications in this corpus.
Search patents in C08G- Granted patents
- 1,360
- Published applications
- 968
- Assignees
- 261
- Inventors
- 2,217
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 15 | 0 |
| 1978 | 18 | 0 |
| 1979 | 15 | 0 |
| 1980 | 21 | 0 |
| 1981 | 16 | 0 |
| 1982 | 14 | 0 |
| 1983 | 16 | 0 |
| 1984 | 23 | 0 |
| 1985 | 19 | 0 |
| 1986 | 9 | 0 |
| 1987 | 21 | 0 |
| 1988 | 30 | 0 |
| 1989 | 35 | 0 |
| 1990 | 43 | 0 |
| 1991 | 39 | 0 |
| 1992 | 44 | 0 |
| 1993 | 30 | 0 |
| 1994 | 37 | 0 |
| 1995 | 33 | 0 |
| 1996 | 24 | 0 |
| 1997 | 33 | 0 |
| 1998 | 24 | 0 |
| 1999 | 22 | 0 |
| 2000 | 30 | 0 |
| 2001 | 30 | 2 |
| 2002 | 28 | 23 |
| 2003 | 28 | 35 |
| 2004 | 25 | 31 |
| 2005 | 11 | 26 |
| 2006 | 19 | 23 |
| 2007 | 14 | 26 |
| 2008 | 17 | 32 |
| 2009 | 24 | 23 |
| 2010 | 29 | 28 |
| 2011 | 16 | 26 |
| 2012 | 22 | 32 |
| 2013 | 31 | 34 |
| 2014 | 18 | 45 |
| 2015 | 38 | 44 |
| 2016 | 39 | 45 |
| 2017 | 49 | 54 |
| 2018 | 37 | 43 |
| 2019 | 37 | 51 |
| 2020 | 41 | 75 |
| 2021 | 39 | 52 |
| 2022 | 41 | 50 |
| 2023 | 32 | 43 |
| 2024 | 23 | 52 |
| 2025 | 29 | 41 |
| 2026 | 23 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electrophotographic photoreceptor, process cartridge, and image forming apparatus29 Sep 2026US 12,748,356 B2FUJIFILM Business Innovation Corp.
- Optical lens that contains thermoplastic resin22 Sep 2026US 12,742,909 B2Mitsubishi Gas Chemical Company, Inc.
- Monomer composition for synthesizing recycled plastic, preparation method thereof, recycled plastic, and molded product using the same28 Jul 2026US 12,692,358 B2LG Chem.Ltd.
- Process for making transparent polymer-based materials for solar panels21 Jul 2026US 12,686,742 B2Saudi Arabian Oil Company
- Process for producing polycarbonate—point of addition of the chain terminator14 Jul 2026US 12,679,930 B2Covestro Intellectual Property GmbH & Co.KG
- Polycarbonate-based resin composition and molded article8 Oct 2026US 2026/0308318 A1Idemitsu Kosan Co., Ltd.
- Polycarbonate resin composition and molded article thereof8 Oct 2026US 2026/0308374 A1Idemitsu Kosan Co., Ltd.
- Resin, copolymer, electronic substrate material, resin composition, coating liquid composition, cured product, film, sheet, and electronic substrate24 Sep 2026US 2026/0286175 A1Idemitsu Kosan Co., Ltd.
- Monomer composition for synthesising recycled plastic, preparation method thereof, recycled plastic, and molded product using the same10 Sep 2026US 2026/0265483 A1LG Chem.Ltd.
- Electronic substrate material, resin, and method for manufactoring resin10 Sep 2026US 2026/0265573 A1Idemitsu Kosan Co., Ltd.
Most cited
By later US patents
- Biodegradable, anionic polymers derived from the amino acid L-tyrosine283US 6,120,491 AThe State University of Rutgers · 2000
- Process for preparing a branched polycarbonate273US 4,001,184 AGeneral Electric Company · 1977
- Process for preparing branched aromatic polycarbonates247US 6,437,083 B1General Electric Company · 2002
- Dihydroxydiphenyl cycloalkanes, their production and their use for the production of high molecular weight polycarbonates183US 4,982,014 ABayer Aktiengesellschaft · 1991
- Radio-opaque polymer biomaterials182US 6,475,477 B1Rutgers, The State University · 2002