C08K 5/15
Heterocyclic compounds having oxygen in the ring
C08K5/15 (Heterocyclic compounds having oxygen in the ring) appears on 2,059 US grants and 2,260 published applications in this corpus.
Search patents in C08K- Granted patents
- 2,059
- Published applications
- 2,260
- Assignees
- 1,122
- Inventors
- 5,909
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 32 | 0 |
| 1977 | 17 | 0 |
| 1978 | 33 | 0 |
| 1979 | 12 | 0 |
| 1980 | 8 | 0 |
| 1981 | 16 | 0 |
| 1982 | 17 | 0 |
| 1983 | 17 | 0 |
| 1984 | 25 | 0 |
| 1985 | 22 | 0 |
| 1986 | 15 | 0 |
| 1987 | 21 | 0 |
| 1988 | 22 | 0 |
| 1989 | 32 | 0 |
| 1990 | 24 | 0 |
| 1991 | 34 | 0 |
| 1992 | 25 | 0 |
| 1993 | 32 | 0 |
| 1994 | 35 | 0 |
| 1995 | 29 | 0 |
| 1996 | 22 | 0 |
| 1997 | 26 | 0 |
| 1998 | 26 | 0 |
| 1999 | 35 | 0 |
| 2000 | 27 | 0 |
| 2001 | 30 | 9 |
| 2002 | 34 | 20 |
| 2003 | 31 | 39 |
| 2004 | 23 | 36 |
| 2005 | 16 | 44 |
| 2006 | 22 | 50 |
| 2007 | 21 | 49 |
| 2008 | 18 | 61 |
| 2009 | 22 | 50 |
| 2010 | 29 | 89 |
| 2011 | 40 | 64 |
| 2012 | 40 | 98 |
| 2013 | 57 | 108 |
| 2014 | 83 | 133 |
| 2015 | 81 | 140 |
| 2016 | 98 | 129 |
| 2017 | 82 | 99 |
| 2018 | 81 | 115 |
| 2019 | 71 | 146 |
| 2020 | 115 | 152 |
| 2021 | 96 | 134 |
| 2022 | 88 | 118 |
| 2023 | 95 | 107 |
| 2024 | 75 | 118 |
| 2025 | 66 | 86 |
| 2026 | 41 | 66 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Dispersions29 Sep 2026US 12,747,394 B2Lankem Ltd.
- Water soluble polymer blend compositions15 Sep 2026US 12,735,546 B2Interfacial Consultants LLC
- Liquid compositions, uses and method of making the same25 Aug 2026US 12,714,981 B1Stewart Superabsorbents, LLC
- Antiglare film laminate, polarizing plate, and display device25 Aug 2026US 12,715,989 B2Xinmei Fontana Holding (Hong Kong) Limited
- Matting polymer composition having excellent weather resistance and impact resistance, and matte sheet including the same11 Aug 2026US 12,703,766 B2Hannanotech Co., Ltd.
- Acetoacetylated Alcohols8 Oct 2026US 2026/0308135 A1Arxada AG
- Method for preparing biodegradable resin composition using composite compatibilizer and biomass-based biodegradable resin composition prepared thereby8 Oct 2026US 2026/0308342 A1Daesang Corporation
- Cleavable crosslinkers for use in 3d printing formulations8 Oct 2026US 2026/0308356 A1Align Technology, Inc.
- Starch-based biodegradable composition and method of manufacturing the same8 Oct 2026US 2026/0308363 A1Daesang Corporation
- Thermoplastic starch formulations with additives for performance enhancements8 Oct 2026US 2026/0308364 A1Biologiq, Inc.
Most cited
By later US patents
- Photochromic indeno-fused naphthopyrans245US 5,645,767 ATransitions Optical, Inc. · 1997
- Methods for polymeric coatings stents225US 6,673,385 B1Advanced Cardiovascular Systems, Inc. · 2004
- Photochromic naphthopyran compounds213US 5,274,132 ATransitions Optical, Inc. · 1993
- Polymerizable polyalkoxylated naphthopyrans186US 6,113,814 ATransitions Optical, Inc. · 2000
- Photochromic naphthopyran compounds182US 5,384,077 ATransitions Optical, Inc. · 1995