C08K 5/3445
Five-membered rings
C08K5/3445 (Five-membered rings) appears on 548 US grants and 680 published applications in this corpus.
Search patents in C08K- Granted patents
- 548
- Published applications
- 680
- Assignees
- 407
- Inventors
- 2,106
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 10 | 0 |
| 1978 | 9 | 0 |
| 1979 | 1 | 0 |
| 1980 | 7 | 0 |
| 1981 | 3 | 0 |
| 1982 | 9 | 0 |
| 1983 | 3 | 0 |
| 1984 | 7 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 7 | 0 |
| 1991 | 13 | 0 |
| 1992 | 6 | 0 |
| 1993 | 6 | 0 |
| 1994 | 6 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 1 | 0 |
| 2002 | 5 | 4 |
| 2003 | 5 | 7 |
| 2004 | 4 | 8 |
| 2005 | 1 | 7 |
| 2006 | 4 | 4 |
| 2007 | 2 | 8 |
| 2008 | 2 | 11 |
| 2009 | 2 | 6 |
| 2010 | 7 | 21 |
| 2011 | 6 | 18 |
| 2012 | 7 | 22 |
| 2013 | 20 | 28 |
| 2014 | 17 | 23 |
| 2015 | 19 | 31 |
| 2016 | 25 | 36 |
| 2017 | 27 | 31 |
| 2018 | 26 | 43 |
| 2019 | 27 | 49 |
| 2020 | 31 | 60 |
| 2021 | 37 | 46 |
| 2022 | 27 | 40 |
| 2023 | 31 | 40 |
| 2024 | 34 | 48 |
| 2025 | 26 | 40 |
| 2026 | 14 | 49 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Two-coat single cure powder coating15 Sep 2026US 12,734,549 B2The Sherwin-Williams Company
- Curing agent, adhesive composition for semiconductor comprising same, adhesive film for semiconductor, and semiconductor package using same15 Sep 2026US 12,735,528 B2LG Chem.Ltd.
- Rubber composition based on a highly saturated diene elastomer1 Sep 2026US 12,723,116 B2Compagnie Generale Des Etablissements Michelin
- Composition of photopolymerizable resins and method to produce an article using this composition11 Aug 2026US 12,703,141 B2
- Dry electrode adhesive16 Jun 2026US 12,655,331 B2Henkel AG & Co. KGaA
- Cyclic olefin copolymer and curable composition17 Sep 2026US 2026/0275017 A1CPC Corporation, Taiwan
- Conductive composition17 Sep 2026US 2026/0275026 A1Tatsuta Electric Wire & Cable Co., Ltd.
- Surface smoothing agent for polyurethane coating film, composition, curing agent, polyurethane resin-forming composition, coating composition, and coating film17 Sep 2026US 2026/0275077 A1Tosoh Corporation
- Polycarbonate resin composition17 Sep 2026US 2026/0275105 A1Idemitsu Kosan Co., Ltd.
- Polycarbonate Composition and Shaped Articles Made Therefrom27 Aug 2026US 2026/0250486 A1Covestro Deutschland AG
Most cited
By later US patents
- Synergistic flame protection agent combination for thermoplastic polymers99US 6,365,071 B1Clariant GmbH · 2002
- Optical coupling device and process for modulating light66US 5,845,025 AThe Trustees of the University of Pennsylvania · 1998
- Emulsifiers for bituminous emulsions47US 4,547,224 AWestvaco Corporation · 1985
- Imidazolides33US 4,436,892 ACiba-Geigy Corporation · 1984
- Rubber compositions and method of treating rubber31US 4,376,189 AMonsanto Company · 1983