C08K 5/35
Having also oxygen in the ring
Official title: having also oxygen in the ring
C08K5/35 (Having also oxygen in the ring) appears on 548 US grants and 497 published applications in this corpus.
Search patents in C08K- Granted patents
- 548
- Published applications
- 497
- Assignees
- 353
- Inventors
- 1,488
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 11 | 0 |
| 1978 | 21 | 0 |
| 1979 | 16 | 0 |
| 1980 | 10 | 0 |
| 1981 | 12 | 0 |
| 1982 | 7 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 2 | 0 |
| 1988 | 11 | 0 |
| 1989 | 9 | 0 |
| 1990 | 9 | 0 |
| 1991 | 13 | 0 |
| 1992 | 16 | 0 |
| 1993 | 12 | 0 |
| 1994 | 7 | 0 |
| 1995 | 7 | 0 |
| 1996 | 6 | 0 |
| 1997 | 5 | 0 |
| 1998 | 7 | 0 |
| 1999 | 9 | 0 |
| 2000 | 6 | 0 |
| 2001 | 6 | 1 |
| 2002 | 9 | 11 |
| 2003 | 14 | 17 |
| 2004 | 8 | 8 |
| 2005 | 7 | 14 |
| 2006 | 3 | 15 |
| 2007 | 9 | 4 |
| 2008 | 3 | 11 |
| 2009 | 4 | 10 |
| 2010 | 8 | 13 |
| 2011 | 6 | 22 |
| 2012 | 9 | 19 |
| 2013 | 13 | 17 |
| 2014 | 9 | 15 |
| 2015 | 14 | 32 |
| 2016 | 17 | 29 |
| 2017 | 22 | 19 |
| 2018 | 12 | 22 |
| 2019 | 14 | 34 |
| 2020 | 20 | 40 |
| 2021 | 29 | 31 |
| 2022 | 20 | 27 |
| 2023 | 18 | 28 |
| 2024 | 11 | 20 |
| 2025 | 17 | 18 |
| 2026 | 14 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Polyurethane-reactive system for pultrusion15 Sep 2026US 12,735,526 B2Covestro Deutschland AG
- Stabilizer composition for silyl-modified polymer sealants25 Aug 2026US 12,715,980 B2Clariant International Ltd.
- Dispersant composition for electricity storage device electrodes7 Jul 2026US 12,674,064 B2Kao Corporation
- Water-based compositions with long term gloss retention16 Jun 2026US 12,655,302 B2Swimc LLC
- Benzoxazine compound, resin raw material composition containing the same, curable resin composition, and cured product thereof28 Apr 2026US 12,612,393 B2Honshu Chemical Industry Co., Ltd.
- Photochromic compound, propargyl alcohol compound, curable composition, optical article, lens, and spectacles24 Sep 2026US 2026/0286216 A1Tokuyama Corporation
- (meth)acrylate, curable composition, cured body, laminate, optical article, lens, and eyeglasses3 Sep 2026US 2026/0258262 A1Tokuyama Corporation
- Composition and molded body20 Aug 2026US 2026/0242583 A1Newlight Technologies, LLC
- Hydroxyphenyltriazine co-stabilizers for stabilized polyesters13 Aug 2026US 2026/0234368 A1BASF SE
- Resin composition and uses of the same13 Aug 2026US 2026/0234399 A1Taiwan Union Technology Corporation
Most cited
By later US patents
- Photochromic naphthopyran compounds213US 5,274,132 ATransitions Optical, Inc. · 1993
- Fluorochemical oxazolidinones161US 5,025,052 AMinnesota Mining and Manufacturing Company · 1991
- Water-absorbing agent and process for producing the same146US 6,809,158 B2Nippon Shokubai Co., Ltd. · 2004
- Photochromic compound and articles containing the same117US 4,931,219 APPG Industries, Inc. · 1990
- Photochromic organic resin composition102US 6,531,076 B2PPG Industries Ohio, Inc. · 2003