C08G 64/302
And cyclic ethers
Official title: {and cyclic ethers}
C08G64/302 (And cyclic ethers) appears on 23 US grants and 31 published applications in this corpus.
Search patents in C08G- Granted patents
- 23
- Published applications
- 31
- Assignees
- 24
- Inventors
- 109
- Latest grant
- 8 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 4 |
| 2013 | 1 | 2 |
| 2014 | 1 | 1 |
| 2015 | 1 | 2 |
| 2016 | 3 | 0 |
| 2017 | 1 | 0 |
| 2018 | 2 | 2 |
| 2019 | 0 | 2 |
| 2020 | 2 | 2 |
| 2021 | 3 | 2 |
| 2022 | 2 | 4 |
| 2023 | 0 | 1 |
| 2024 | 3 | 2 |
| 2025 | 1 | 4 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polycarbonate copolymer, method for preparing same, and composition comprising same8 Apr 2025US 12,269,921 B2Hanwha Solutions Corporation
- Solid polymer electrolyte including crosslinked polymer of lactone/cyclic carbonate, and method of preparing the same24 Dec 2024US 12,176,483 B2Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Purification process for polyether-carbonate polyols19 Nov 2024US 12,146,027 B2Dow Global Technologies LLC
- Polycarbonate resin, method for producing the same, and optical lens9 Apr 2024US 11,952,460 B2Mitsubishi Gas Chemical Company, Inc.
- Crystalline polythiocarbonate and preparation method therefor8 Nov 2022US 11,492,447 B2
- Surface-active agent1 Oct 2026US 2026/0297250 A1Econic Technologies Ltd.
- New polymers for battery applications25 Sep 2025US 2025/0297061 A1Oxford University Innovation Limited
- Resin and Method for Preparing the Same22 May 2025US 2025/0163215 A1LG Chem.Ltd.
- Biodegradable polycarbonate copolymer comprising units derived from anhydrosugar alcohol, anhydrosugar alcohol-alkylene glycol, and aromatic diol, method for producing same, and molded product comprising same27 Mar 2025US 2025/0101173 A1Samyang Corporation
- Polycarbonate copolymer, method for preparing same, and composition comprising same16 Jan 2025US 2025/0019495 A1Hanwha Solutions Corporation
Most cited
By later US patents
- Process for preparing poly (alkylene carbonates)27US 4,686,276 AThe Dow Chemical Company · 1987
- Organometallic catalyst and preparation thereof5US 8,507,708 B2The University of Sydney · 2013
- Amorphous polyester from bio-based bis-furan assembly4US 9,527,952 B1The University of Toledo · 2016
- Resin composition, stretched film, circularly polarizing plate, and image display device2US 9,518,150 B2Mitsubishi Chemical Corporation · 2016
- Polycarbonate diol and producing method thereof, and polyurethane and active energy ray-curable polymer composition both formed using same1US 10,907,012 B2Mitsubishi Chemical Corporation · 2021