C08G 75/28
Polythiocarbonates
C08G75/28 (Polythiocarbonates) appears on 47 US grants and 38 published applications in this corpus.
Search patents in C08G- Granted patents
- 47
- Published applications
- 38
- Assignees
- 27
- Inventors
- 95
- Latest grant
- 8 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 3 |
| 2004 | 0 | 1 |
| 2005 | 2 | 3 |
| 2006 | 0 | 2 |
| 2007 | 2 | 3 |
| 2008 | 4 | 4 |
| 2009 | 6 | 5 |
| 2010 | 2 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 3 |
| 2013 | 5 | 1 |
| 2014 | 2 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 1 |
| 2021 | 1 | 4 |
| 2022 | 2 | 2 |
| 2023 | 1 | 2 |
| 2024 | 2 | 1 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Thiocarbonyl-based poly(O-thiocarbamate) compound and preparation method and use thereof8 Jul 2025US 12,351,687 B2Zhejiang University
- Radical cascade-enabled synthesis of precision polymers with complex main-chain structures6 May 2025US 12,291,596 B2The Trustees of Boston College
- Polymers of a compound comprising a monothiocarbonate group and an ethylenically unsaturated group13 Aug 2024US 12,060,458 B2BASF SE
- Process for preparing a sulfur copolymer9 Jul 2024US 12,031,030 B2BASF SE
- Organic metal-free catalysts with electrophilic and nucleophilic dual-functions, preparation methods of making the same, and uses thereof10 Oct 2023US 11,780,961 B2Zhejiang University
- Process for preparing a sulfur copolymer28 Mar 2024US 2024/0101823 A1BASF SE
- Process for the free radical polymerization of thionolactones or thionocarbonates18 May 2023US 2023/0151147 A1Centre National De La Recherche Scientifique
- Thiocarbonyl-based poly(o-thiocarbamate) compound and preparation method and use thereof5 Jan 2023US 2023/0002559 A1Zhejiang University
- Crystalline polythiocarbonate and preparation method therefor7 Apr 2022US 2022/0106445 A1Zhejiang University
- Radical cascade-enabled synthesis of precision polymers with complex main-chain structures24 Feb 2022US 2022/0056200 A1The Trustees of Boston College
Most cited
By later US patents
- Preparation of branched polycarbonate composition from cyclic aromatic polycarbonate oligomer, polyhydric phenol and polycarbonate107US 5,191,038 AGeneral Electric Company · 1993
- Cyclic polycarbonate oligomers and methods for their preparation and use78US 4,644,053 AGeneral Electric Company · 1987
- Method for preparing cyclic polycarbonate oligomer mixtures53US 4,727,134 AGeneral Electric Company · 1988
- Method for converting cyclic polycarbonate oligomer mixtures to linear polycarbonate, and composition resulting therefrom46US 4,740,583 AGeneral Electric Company · 1988
- Preparation of branched polycarbonate from oligomeric cyclic polycarbonate and polyhydric phenol36US 5,097,008 AGeneral Electric Company · 1992