C08K 5/3472
Five-membered rings
C08K5/3472 (Five-membered rings) appears on 703 US grants and 723 published applications in this corpus.
Search patents in C08K- Granted patents
- 703
- Published applications
- 723
- Assignees
- 405
- Inventors
- 2,025
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 6 | 0 |
| 1978 | 16 | 0 |
| 1979 | 8 | 0 |
| 1980 | 9 | 0 |
| 1981 | 8 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 8 | 0 |
| 1985 | 9 | 0 |
| 1986 | 5 | 0 |
| 1987 | 8 | 0 |
| 1988 | 13 | 0 |
| 1989 | 17 | 0 |
| 1990 | 11 | 0 |
| 1991 | 13 | 0 |
| 1992 | 10 | 0 |
| 1993 | 8 | 0 |
| 1994 | 6 | 0 |
| 1995 | 9 | 0 |
| 1996 | 16 | 0 |
| 1997 | 10 | 0 |
| 1998 | 6 | 0 |
| 1999 | 16 | 0 |
| 2000 | 16 | 0 |
| 2001 | 20 | 8 |
| 2002 | 21 | 20 |
| 2003 | 10 | 13 |
| 2004 | 15 | 18 |
| 2005 | 11 | 8 |
| 2006 | 7 | 11 |
| 2007 | 7 | 6 |
| 2008 | 5 | 11 |
| 2009 | 2 | 13 |
| 2010 | 8 | 17 |
| 2011 | 6 | 14 |
| 2012 | 14 | 16 |
| 2013 | 7 | 20 |
| 2014 | 8 | 26 |
| 2015 | 18 | 42 |
| 2016 | 15 | 37 |
| 2017 | 28 | 37 |
| 2018 | 25 | 38 |
| 2019 | 23 | 53 |
| 2020 | 36 | 51 |
| 2021 | 39 | 51 |
| 2022 | 21 | 49 |
| 2023 | 29 | 40 |
| 2024 | 35 | 34 |
| 2025 | 26 | 42 |
| 2026 | 16 | 48 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Compositions for elastomeric compounds comprising tetrazole compatibilizing agents and tyres comprising the same29 Sep 2026US 12,747,335 B2Pirelli Tyre S. P. A.
- Polymerizable composition for optical material, optical material, and use thereof29 Sep 2026US 12,747,336 B2Mitsui Chemicals, Inc.
- Stabilizer composition for silyl-modified polymer sealants25 Aug 2026US 12,715,980 B2Clariant International Ltd.
- Optical film, display device, and composition for forming colored layer18 Aug 2026US 12,710,566 B2Toppan Inc.
- Ultraviolet fusing agents for colorless three dimensional printed parts4 Aug 2026US 12,697,771 B2Peridot Print LLC
- Polycarbonate-based resin composition and molded article8 Oct 2026US 2026/0308318 A1Idemitsu Kosan Co., Ltd.
- Composition, polymer, cured product, molded body, and method for producing polymethyl methacrylate24 Sep 2026US 2026/0286016 A1Sumitomo Chemical Company, Limited
- Heat-curing epoxy resin composition suitable for low curing temperature with good storage stability24 Sep 2026US 2026/0286039 A1Sika Technology AG
- Ophthalmic lens comprising an acrylonitrile compound24 Sep 2026US 2026/0286135 A1Essilor International
- Curable resin composition with adjustable adhesion properties and methods thereof10 Sep 2026US 2026/0265519 A1Kaneka Americas Holding, Inc.
Most cited
By later US patents
- Ultraviolet absorbing polymers comprising 2-hydroxy-5-acrylyloxyphenyl-2H-benzotriazoles297US 4,528,311 AIolab Corporation · 1985
- Benzotriazole UV absorbers having enhanced durability107US 6,166,218 ACiba Specialty Chemicals Corporation · 2000
- Silicone hydrogels having a structure formed via controlled reaction kinetics103US 8,937,110 B2Johnson & Johnson Vision Care, Inc. · 2015
- UV-protected, multilayer polycarbonate sheets96US 5,846,659 ABayer Aktiengesellschaft · 1998
- 2-(2-Hydroxyphenyl)-benztriazoles, their use as UV-absorbers and their preparation83US 4,853,471 ACiba-Geigy Corporation · 1989