C08G 64/02
Aliphatic polycarbonates
C08G64/02 (Aliphatic polycarbonates) appears on 621 US grants and 734 published applications in this corpus.
Search patents in C08G- Granted patents
- 621
- Published applications
- 734
- Assignees
- 310
- Inventors
- 1,526
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 5 | 0 |
| 1988 | 7 | 0 |
| 1989 | 8 | 0 |
| 1990 | 7 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 6 | 0 |
| 1995 | 5 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 8 | 1 |
| 2002 | 6 | 5 |
| 2003 | 6 | 8 |
| 2004 | 3 | 10 |
| 2005 | 6 | 3 |
| 2006 | 5 | 8 |
| 2007 | 3 | 11 |
| 2008 | 3 | 14 |
| 2009 | 6 | 24 |
| 2010 | 17 | 34 |
| 2011 | 13 | 34 |
| 2012 | 23 | 55 |
| 2013 | 38 | 33 |
| 2014 | 27 | 42 |
| 2015 | 33 | 38 |
| 2016 | 39 | 36 |
| 2017 | 27 | 38 |
| 2018 | 41 | 40 |
| 2019 | 30 | 48 |
| 2020 | 40 | 49 |
| 2021 | 38 | 42 |
| 2022 | 26 | 54 |
| 2023 | 21 | 37 |
| 2024 | 31 | 19 |
| 2025 | 33 | 23 |
| 2026 | 9 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Chlorosulfonated polypropylene carbonate, and production method and use thereof6 Oct 2026US 12,753,278 B2Changchun Institute of Applied Chemistry Chinese Academy of Sciences
- Ring-opening polymerizations using a flow reactor8 Sep 2026US 12,729,271 B2International Business Machines Corporation
- Process for preparing polypropylene carbonate30 Jun 2026US 12,668,661 B2ENI S. p. A.
- Monomers for non-isocyanate polyurethanes23 Jun 2026US 12,662,574 B2Alliance for Energy Innovation, LLC
- Polycarbonate polyol composition12 May 2026US 12,624,151 B2Asahi Kasei Kabushiki Kaisha
- Biodegradable resin composition8 Oct 2026US 2026/0308372 A1Mitsubishi Gas Chemical Company, Inc.
- 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
- Lignin-based biodegradable polymers and methods of making the same10 Sep 2026US 2026/0265456 A1The Florida State University Research Foundation, Inc.
- Polycarbonate foam material, precursor composition and kit thereof10 Sep 2026US 2026/0265457 A1Basque Center for Macromolecular Design and Engineering, Polymat Fundazioa
Most cited
By later US patents
- Hydrolytically degradable polymers and hydrogels made therefrom235US 6,348,558 B1Shearwater Corporation · 2002
- Polyesters154US 5,849,859 ANovartis AG · 1998
- Polycarbonate polyol compositions and methods78US 8,247,520 B2Novomer, Inc. · 2012
- Polycarbonate polyol compositions and methods59US 8,470,956 B2Novomer, Inc. · 2013
- Process for preparing polycarbonates58US 4,131,731 ABeatrice Foods Co. · 1978