C08G 18/3293
Containing heterocyclic groups
Official title: {containing heterocyclic groups}
C08G18/3293 (Containing heterocyclic groups) appears on 40 US grants and 37 published applications in this corpus.
Search patents in C08G- Granted patents
- 40
- Published applications
- 37
- Assignees
- 39
- Inventors
- 136
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 2 |
| 2009 | 0 | 2 |
| 2010 | 1 | 2 |
| 2011 | 1 | 2 |
| 2012 | 3 | 1 |
| 2013 | 2 | 0 |
| 2014 | 0 | 1 |
| 2015 | 3 | 1 |
| 2016 | 0 | 4 |
| 2017 | 3 | 4 |
| 2018 | 2 | 3 |
| 2019 | 2 | 2 |
| 2020 | 2 | 0 |
| 2021 | 2 | 2 |
| 2022 | 1 | 1 |
| 2023 | 0 | 2 |
| 2024 | 3 | 1 |
| 2025 | 0 | 1 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Articles of manufacture with polyurea capsules cross-linked with chitosan24 Mar 2026US 12,582,956 B2
- Modification method of polyurethane, polyurethane, polishing pad, and modification method of polishing pad17 Mar 2026US 12,576,474 B2Kuraray Co., Ltd.
- Electrophotographic member, process cartridge, and electrophotographic image forming apparatus3 Dec 2024US 12,158,724 B2Canon Kabushiki Kaisha
- Modification method of polyurethane, polyurethane, polishing pad, and modification method of polishing pad8 Oct 2024US 12,109,665 B2Kuraray Co., Ltd.
- Bio-based polyols, esters, and surfactants19 Mar 2024US 11,932,721 B2
- Water-borne multi-pack type coating composition and method for producing coated article13 Aug 2026US 2026/0234435 A1Nippon Paint Automotive Coatings Co., Ltd.
- Conductive elastic roller, process cartridge, and electrophotographic image forming apparatus6 Aug 2026US 2026/0227723 A1Canon Kabushiki Kaisha
- Articles of Manufacture with Polyurea Capsules Cross-linked with Chitosan25 Jun 2026US 2026/0175188 A1Encapsys, LLC
- Thermoset polyurethane foam incorporating dynamic covalent adaptable networks25 Jun 2026US 2026/0176406 A1Ford Global Technologies, LLC
- Articles of Manufacture with Polyurea Capsules Cross-linked with Chitosan26 Jun 2025US 2025/0205668 A1Encapsys, LLC
Most cited
By later US patents
- UV-absorbing polyurethanes and polyesters46US 5,459,222 ACiba-Geigy Corporation · 1995
- Process for preparing rigid polyurethane foams22US 4,704,411 AThe Dow Chemical Company · 1987
- Amine-functionalized polymeric compositions for medical devices21US 10,688,217 B2KCI Licensing, Inc. · 2020
- Molded rigid polyurethane foams prepared from aminoalkylpiperazine-initiated polyols19US 4,704,410 AThe Dow Chemical Company · 1987
- Process for producing polyurethane resins and sheet materials14US 4,271,217 ASanyo Chemical Industries, Ltd. · 1981