C07C 251/02
Containing imino groups
Official title: containing imino groups
C07C251/02 (Containing imino groups) appears on 719 US grants and 666 published applications in this corpus.
Search patents in C07C- Granted patents
- 719
- Published applications
- 666
- Assignees
- 472
- Inventors
- 2,066
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 8 | 0 |
| 1990 | 8 | 0 |
| 1991 | 11 | 0 |
| 1992 | 8 | 0 |
| 1993 | 11 | 0 |
| 1994 | 15 | 0 |
| 1995 | 19 | 0 |
| 1996 | 23 | 0 |
| 1997 | 18 | 0 |
| 1998 | 18 | 0 |
| 1999 | 15 | 0 |
| 2000 | 24 | 0 |
| 2001 | 15 | 10 |
| 2002 | 34 | 28 |
| 2003 | 27 | 26 |
| 2004 | 21 | 30 |
| 2005 | 18 | 22 |
| 2006 | 16 | 18 |
| 2007 | 7 | 17 |
| 2008 | 15 | 33 |
| 2009 | 15 | 38 |
| 2010 | 21 | 33 |
| 2011 | 27 | 40 |
| 2012 | 17 | 26 |
| 2013 | 25 | 30 |
| 2014 | 31 | 37 |
| 2015 | 32 | 30 |
| 2016 | 33 | 21 |
| 2017 | 28 | 32 |
| 2018 | 22 | 28 |
| 2019 | 21 | 25 |
| 2020 | 23 | 27 |
| 2021 | 12 | 19 |
| 2022 | 21 | 26 |
| 2023 | 13 | 24 |
| 2024 | 11 | 16 |
| 2025 | 11 | 16 |
| 2026 | 9 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C07C 251/24Having carbon atoms of imino groups bound to carbon atoms of six-membered353
- C07C 251/04Having carbon atoms of imino groups bound to hydrogen atoms or to239
- C07C 251/20Having carbon atoms of imino groups being part of rings other than94
- C07C 251/30Having nitrogen atoms of imino groups quaternised44
- C07C 251/28Having nitrogen atoms of imino groups acylated22
- C07C 251/18Having carbon atoms of imino groups bound to carbon atoms of rings21
- C07C 251/26Having nitrogen atoms of imino groups further bound to halogen atoms5
Recent patents
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- Intermediates1 Sep 2026US 12,723,019 B2Syngenta Crop Protection AG
- Styryl carboxylate derivatives26 May 2026US 12,637,409 B2Renovel Innovations, Inc.
- Halogenated benzylidine derivatives26 May 2026US 12,637,416 B1Renovel Innovations, Inc.
- Pigmented and fluorescent compounds derived from the addition of a primary or secondary amine to an aldehyde31 Mar 2026US 12,590,209 B2Regents of the University of Minnesota
- Halogenated benzylidine derivatives and their use in the treatment of cancers10 Sep 2026US 2026/0265180 A1Renovel Innovations, Inc.
- Process for synthesis of epoxy resin from vanillin-based dialdehydes, aminophenol derivatives, and epichlorohydrin20 Aug 2026US 2026/0242535 A1Korea Institute of Science and Technology
- Novel iron-based compounds, processes for the preparation thereof, and use thereof as catalysts16 Jul 2026US 2026/0200963 A1Centre National De La Recherche Scientifique
- Masp-2 inhibitors and methods of use9 Jul 2026US 2026/0193179 A9Omeros Corporation
- Compounds, compositions, methods of using, and methods for preparing compounds2 Jul 2026US 2026/0183260 A1The Institute for Stem Cell Biology and Regenerative Medicine (Instem)
Most cited
By later US patents
- Ligands for metals and improved metal-catalyzed processes based thereon143US 6,307,087 B1Massachusetts Institute of Technology · 2001
- Process for producing 4-trifluoromethylnicotinic acid129US 5,708,175 AIshihara Sangyo Kaisha, Ltd. · 1998
- Ligands for metals and improved metal-catalyzed processes based thereon100US 6,395,916 B1Massachusetts Institute of Technology · 2002
- Ligands for metals and improved metal-catalyzed processes based thereon93US 7,223,879 B2Massachusetts Institute of Technology · 2007
- Amyloid binding nitrogen-linked compounds for the antemortem diagnosis of alzheimer's disease, in vivo imaging and prevention of amyloid deposits87US 6,417,178 B1University of Pittsburgh · 2002