C07C 251/88
Having also the other nitrogen atom doubly-bound to a carbon atom
Official title: having also the other nitrogen atom doubly-bound to a carbon atom, e.g. azines
C07C251/88 (Having also the other nitrogen atom doubly-bound to a carbon atom) appears on 88 US grants and 35 published applications in this corpus.
Search patents in C07C- Granted patents
- 88
- Published applications
- 35
- Assignees
- 43
- Inventors
- 214
- Latest grant
- 16 Jul 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 4 | 2 |
| 2003 | 3 | 1 |
| 2004 | 1 | 4 |
| 2005 | 3 | 0 |
| 2006 | 2 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 3 | 1 |
| 2014 | 2 | 4 |
| 2015 | 2 | 2 |
| 2016 | 3 | 3 |
| 2017 | 3 | 5 |
| 2018 | 0 | 3 |
| 2019 | 3 | 1 |
| 2020 | 3 | 1 |
| 2021 | 1 | 1 |
| 2022 | 2 | 1 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Multilayer phase difference plate, polarizing plate, and image display device16 Jul 2024US 12,038,650 B2Zeon Corporation
- Polymerizable compound and optically anisotropic object1 Mar 2022US 11,261,378 B2DIC Corporation
- Process for production of hydrazine hydrate18 Jan 2022US 11,225,413 B2Council of Scientific and Industrial Research
- Polymerizable compound and optically anisotropic body16 Feb 2021US 10,919,870 B2DIC Corporation
- Polymerizable compound and optically anisotropic body28 Jul 2020US 10,723,952 B2DIC Corporation
- Process of preparation of indoxacarb and its intermediates29 May 2025US 2025/0171409 A1Adama Makhteshim Ltd.
- Method of controlling soybean rust fungus resistant to qoi fungicide9 Nov 2023US 2023/0354808 A1Sumitomo Chemical Company, Limited
- Multilayer phase difference plate, polarizing plate, and image display device9 Jun 2022US 2022/0177419 A1Zeon Corporation
- Dihydrazone compounds having high affinity to a beta protein and tau protein, derivatives thereof and use thereof23 Dec 2021US 2021/0393810 A1Beijing Normal University
- Phase difference plate, multilayer phase difference plate, polarizing plate, image display device and polymerizable compound9 Jan 2020US 2020/0012026 A1Zeon Corporation
Most cited
By later US patents
- Method for preparing azines and hydrazones38US 3,972,878 AProduits Chimiques Ugine Kuhlmann · 1976
- Electrophotographic member with hydrazone or ketazine compounds28US 4,420,548 ACanon Kabushiki Kaisha · 1983
- Methoxyiminoacetic acid derivative and agricultural/horticultural fungicide containing the same as active ingredient15US 5,407,902 AMitsubishi Kasei Corporation · 1995
- Azine derivative, process for the preparation thereof, nematic liquid crystal composition and liquid crystal display system comprising same12US 6,010,642 ADainippon Ink and Chemicals, Inc. · 2000
- Dipole aligned NLO chromophores12US 6,229,047 B1The Curators of the University of Missouri · 2001