C07D 249/20
With aryl radicals directly attached in position 2
Official title: with aryl radicals directly attached in position 2
C07D249/20 (With aryl radicals directly attached in position 2) appears on 349 US grants and 169 published applications in this corpus.
Search patents in C07D- Granted patents
- 349
- Published applications
- 169
- Assignees
- 132
- Inventors
- 646
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 6 | 0 |
| 1978 | 9 | 0 |
| 1979 | 5 | 0 |
| 1980 | 8 | 0 |
| 1981 | 8 | 0 |
| 1982 | 7 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 7 | 0 |
| 1988 | 10 | 0 |
| 1989 | 9 | 0 |
| 1990 | 10 | 0 |
| 1991 | 9 | 0 |
| 1992 | 13 | 0 |
| 1993 | 9 | 0 |
| 1994 | 12 | 0 |
| 1995 | 11 | 0 |
| 1996 | 16 | 0 |
| 1997 | 11 | 0 |
| 1998 | 9 | 0 |
| 1999 | 16 | 0 |
| 2000 | 8 | 0 |
| 2001 | 11 | 4 |
| 2002 | 12 | 11 |
| 2003 | 8 | 8 |
| 2004 | 7 | 11 |
| 2005 | 1 | 4 |
| 2006 | 8 | 7 |
| 2007 | 7 | 5 |
| 2008 | 3 | 1 |
| 2009 | 2 | 4 |
| 2010 | 7 | 7 |
| 2011 | 1 | 9 |
| 2012 | 6 | 7 |
| 2013 | 2 | 5 |
| 2014 | 4 | 2 |
| 2015 | 2 | 4 |
| 2016 | 5 | 4 |
| 2017 | 2 | 6 |
| 2018 | 5 | 7 |
| 2019 | 6 | 12 |
| 2020 | 9 | 9 |
| 2021 | 7 | 3 |
| 2022 | 5 | 13 |
| 2023 | 1 | 6 |
| 2024 | 7 | 6 |
| 2025 | 6 | 8 |
| 2026 | 5 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Organic material composition and applications thereof23 Jun 2026US 12,662,472 B2Ningbo Lumilan Advanced Materials Co., Ltd.
- Polymerizable composition, polymer, ultraviolet shielding material, laminate, compound, ultraviolet absorbing agent, and method of producing compound23 Jun 2026US 12,662,558 B2FUJIFILM Corporation
- Light-resistant, heat-resistant and durable ultraviolet absorber9 Jun 2026US 12,649,845 B2Miyoshi Oil & Fat Co., Ltd.
- Organic EL device, amine compound having benzazole ring structure, and method in which said amine compound is used in capping layer of organic EL device2 Jun 2026US 12,643,869 B2Hodogaya Chemical Co., Ltd.
- Method of synthesizing polylactic acid and catalyst thereof6 Jan 2026US 12,516,155 B2Plastics Industry Development Center
- Ortho-phthalaldehyde-functionalized ultravioletabsorbers and visible chromophores for semi-permanent topical applications1 Oct 2026US 2026/0297038 A1The Regents of the University of Colorado, a body corporate
- Light-resistant, heat-resistant and durable ultraviolet absorber17 Sep 2026US 2026/0275079 A1Miyoshi Oil & Fat Co., Ltd.
- Uv light stabilizers13 Aug 2026US 2026/0234326 A1BASF SE
- Ultraviolet light absorbing agent23 Jul 2026US 2026/0209473 A1Miyoshi Oil & Fat Co., Ltd.
- Light absorbers for ophthalmc lens materals and devices14 May 2026US 2026/0132236 A1Alcon Inc.
Most cited
By later US patents
- Ultraviolet absorbing polymers comprising 2-(2'-hydroxy-5'-acryloyloxyalkoxyphenyl)-2H-benzotriazole113US 4,716,234 AIolab Corporation · 1987
- Benzotriazole UV absorbers having enhanced durability107US 6,166,218 ACiba Specialty Chemicals Corporation · 2000
- 2-(2-Hydroxyphenyl)-benztriazoles, their use as UV-absorbers and their preparation83US 4,853,471 ACiba-Geigy Corporation · 1989
- Use of substituted 2-(2'-hydroxyaryl)-2H-benzotriazolesulfonates as photostabilizing agents for natural and synthetic fibres80US 4,770,667 ABoard of Regents, U T Systems · 1988
- Water-soluble compounds as light stabilizers80US 5,096,781 ACiba-Geigy Corporation · 1992