C08K 5/156
Having two oxygen atoms in the ring
Official title: having two oxygen atoms in the ring
C08K5/156 (Having two oxygen atoms in the ring) appears on 357 US grants and 333 published applications in this corpus.
Search patents in C08K- Granted patents
- 357
- Published applications
- 333
- Assignees
- 214
- Inventors
- 917
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 6 | 0 |
| 1984 | 6 | 0 |
| 1985 | 4 | 0 |
| 1986 | 7 | 0 |
| 1987 | 5 | 0 |
| 1988 | 6 | 0 |
| 1989 | 11 | 0 |
| 1990 | 6 | 0 |
| 1991 | 10 | 0 |
| 1992 | 10 | 0 |
| 1993 | 6 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 8 | 0 |
| 2001 | 9 | 1 |
| 2002 | 3 | 5 |
| 2003 | 12 | 16 |
| 2004 | 4 | 7 |
| 2005 | 4 | 9 |
| 2006 | 4 | 9 |
| 2007 | 3 | 11 |
| 2008 | 4 | 7 |
| 2009 | 7 | 8 |
| 2010 | 7 | 17 |
| 2011 | 8 | 9 |
| 2012 | 7 | 18 |
| 2013 | 5 | 14 |
| 2014 | 12 | 14 |
| 2015 | 15 | 16 |
| 2016 | 14 | 17 |
| 2017 | 12 | 16 |
| 2018 | 7 | 18 |
| 2019 | 17 | 23 |
| 2020 | 16 | 18 |
| 2021 | 16 | 20 |
| 2022 | 11 | 13 |
| 2023 | 12 | 8 |
| 2024 | 17 | 18 |
| 2025 | 6 | 11 |
| 2026 | 4 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Resin composition, display apparatus including the resin composition, and portable electronic device including the resin composition26 May 2026US 12,638,886 B2Dongjin Semichem Co., Ltd.
- Photochromic compound, naphthol derivative, curable composition, optical article, lens, and eyeglasses7 Apr 2026US 12,595,408 B2Tokuyama Corporation
- Polydiene rubbers with functionalized end groups3 Mar 2026US 12,565,550 B2Arlanxeo Deutschland GmbH
- Propylene-ethylene copolymer compositions suitable for hot fill packaging of foodstuffs17 Feb 2026US 12,552,884 B2W. R. Grace & Co.-Conn.
- Thermoplastic resin and optical lens including same30 Dec 2025US 12,509,579 B2Mitsubishi Gas Chemical Company, Inc.
- Molded body, downhole tool member, and downhole tool24 Sep 2026US 2026/0286043 A1Kureha Corporation
- Compound, composition, formed article, and production method13 Aug 2026US 2026/0234158 A1Mitsubishi Gas Chemical Company, Inc.
- Organic additives to reduce the coefficient of thermal expansion of polymer compositions6 Aug 2026US 2026/0226253 A1National Technology & Engineering Solutions of Sandia, LLC
- Curable composition, stretchable coating layer using the same, stretchable secondary battery, fuel cell, and stretchable transistor using stretchable coating layer, wearable device including the same, and method for manufacturing curable composition6 Aug 2026US 2026/0226293 A1Korea Institute of Science and Technology
- Transparent polypropylene resin and preparation method thereof9 Jul 2026US 2026/0192501 A1Shandong Chambroad Polyolefin Performance Materials Co., Ltd.
Most cited
By later US patents
- Bis(3,4-dialkylbenzylidene) sorbitol acetals and compositions containing same105US 5,049,605 AMilliken Research Corporation · 1991
- Polyolefin plastic compositions104US 4,016,118 AC. Itch & Co., Ltd. · 1977
- Polyolefin plastic compositions comprising meta- or papa-derivatives (choro- or bromo-) of di-benzyuidene sorbitol89US 4,371,645 AMilliken Research Corporation · 1983
- Ion sensitive polymeric materials60US 6,194,517 B1Kimberly-Clark Worldwide, Inc. · 2001
- Ion sensitive polymeric materials49US 5,986,004 AKimberly-Clark Worldwide, Inc. · 1999