C08G 64/30
Using carbonates
Official title: using carbonates
C08G64/30 (Using carbonates) appears on 842 US grants and 718 published applications in this corpus.
Search patents in C08G- Granted patents
- 842
- Published applications
- 718
- Assignees
- 219
- Inventors
- 1,585
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 9 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 10 | 0 |
| 1988 | 13 | 0 |
| 1989 | 6 | 0 |
| 1990 | 8 | 0 |
| 1991 | 4 | 0 |
| 1992 | 15 | 0 |
| 1993 | 8 | 0 |
| 1994 | 23 | 0 |
| 1995 | 28 | 0 |
| 1996 | 27 | 0 |
| 1997 | 26 | 0 |
| 1998 | 19 | 0 |
| 1999 | 19 | 0 |
| 2000 | 12 | 0 |
| 2001 | 49 | 5 |
| 2002 | 29 | 24 |
| 2003 | 34 | 43 |
| 2004 | 35 | 23 |
| 2005 | 9 | 15 |
| 2006 | 19 | 14 |
| 2007 | 10 | 19 |
| 2008 | 7 | 13 |
| 2009 | 23 | 28 |
| 2010 | 16 | 17 |
| 2011 | 12 | 20 |
| 2012 | 10 | 23 |
| 2013 | 19 | 19 |
| 2014 | 19 | 32 |
| 2015 | 26 | 31 |
| 2016 | 33 | 35 |
| 2017 | 24 | 37 |
| 2018 | 23 | 30 |
| 2019 | 21 | 26 |
| 2020 | 30 | 44 |
| 2021 | 35 | 36 |
| 2022 | 25 | 44 |
| 2023 | 13 | 44 |
| 2024 | 22 | 41 |
| 2025 | 30 | 40 |
| 2026 | 19 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Polycarbonate, and method for preparing same6 Oct 2026US 12,753,277 B2LG Chem.Ltd.
- Polycarbonate and method for preparing same29 Sep 2026US 12,747,320 B2LG Chem.Ltd.
- Ring-opening polymerizations using a flow reactor8 Sep 2026US 12,729,271 B2International Business Machines Corporation
- Process for making transparent polymer-based materials for solar panels21 Jul 2026US 12,686,742 B2Saudi Arabian Oil Company
- Monomer composition for synthesizing recycled plastic, preparation method thereof, recycled plastic, and molded product using the same16 Jun 2026US 12,655,266 B2LG Chem.Ltd.
- Surface-active agent1 Oct 2026US 2026/0297250 A1Econic Technologies Ltd.
- Composition and method for producing same, urethane resin, aqueous urethane resin dispersion, and coating agent24 Sep 2026US 2026/0286037 A1Tosoh Corporation
- Polycarbonate resin and optical member using said resin24 Sep 2026US 2026/0286048 A1Teijin Limited
- Lignin-based biodegradable polymers and methods of making the same10 Sep 2026US 2026/0265456 A1The Florida State University Research Foundation, Inc.
- Sulfur-containing heterocyclic compounds and thermoplastic resins20 Aug 2026US 2026/0242539 A1Mitsubishi Gas Chemical Company, Inc.
Most cited
By later US patents
- Process for preparing branched aromatic polycarbonates247US 6,437,083 B1General Electric Company · 2002
- Polycarbonate transesterification process201US 4,217,438 AGeneral Electric Company · 1980
- Preparation of branched polycarbonate composition from cyclic aromatic polycarbonate oligomer, polyhydric phenol and polycarbonate107US 5,191,038 AGeneral Electric Company · 1993
- Two-step process for the preparation of a (co)polycarbonate by transesterification82US 5,498,688 ADaicel Chemical Industries, Ltd. · 1996
- Cyclic polycarbonate oligomers and methods for their preparation and use78US 4,644,053 AGeneral Electric Company · 1987