C07D 231/38
Nitrogen atoms
Official title: Nitrogen atoms (nitro radicals C07D231/16)
C07D231/38 (Nitrogen atoms) appears on 1,184 US grants and 1,242 published applications in this corpus.
Search patents in C07D- Granted patents
- 1,184
- Published applications
- 1,242
- Assignees
- 573
- Inventors
- 3,912
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 16 | 0 |
| 1978 | 12 | 0 |
| 1979 | 8 | 0 |
| 1980 | 8 | 0 |
| 1981 | 10 | 0 |
| 1982 | 9 | 0 |
| 1983 | 8 | 0 |
| 1984 | 12 | 0 |
| 1985 | 20 | 0 |
| 1986 | 13 | 0 |
| 1987 | 11 | 0 |
| 1988 | 16 | 0 |
| 1989 | 22 | 0 |
| 1990 | 9 | 0 |
| 1991 | 7 | 0 |
| 1992 | 5 | 0 |
| 1993 | 9 | 0 |
| 1994 | 4 | 0 |
| 1995 | 9 | 0 |
| 1996 | 14 | 0 |
| 1997 | 17 | 0 |
| 1998 | 22 | 0 |
| 1999 | 21 | 0 |
| 2000 | 32 | 0 |
| 2001 | 27 | 6 |
| 2002 | 34 | 43 |
| 2003 | 31 | 42 |
| 2004 | 19 | 73 |
| 2005 | 26 | 80 |
| 2006 | 37 | 44 |
| 2007 | 33 | 61 |
| 2008 | 37 | 73 |
| 2009 | 33 | 50 |
| 2010 | 40 | 66 |
| 2011 | 31 | 48 |
| 2012 | 43 | 52 |
| 2013 | 34 | 44 |
| 2014 | 47 | 45 |
| 2015 | 48 | 58 |
| 2016 | 44 | 55 |
| 2017 | 45 | 45 |
| 2018 | 39 | 52 |
| 2019 | 41 | 36 |
| 2020 | 26 | 43 |
| 2021 | 24 | 42 |
| 2022 | 29 | 39 |
| 2023 | 27 | 50 |
| 2024 | 24 | 32 |
| 2025 | 29 | 37 |
| 2026 | 14 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pyrazolyl compounds as KV7 channel activators29 Sep 2026US 12,747,237 B2
- PAI-1 inhibitors and uses thereof15 Sep 2026US 12,735,402 B2The Cleveland Clinic Foundation
- Pyrazole-substituted cyclopentanol ester derivative and use thereof25 Aug 2026US 12,715,859 B2Chia Tai Tianqing Pharmaceutical Group Co., Ltd.
- Pesticidal pyrazole and triazole derivatives4 Aug 2026US 12,696,902 B2BASF SE
- USP30 inhibitors and uses thereof2 Jun 2026US 12,643,852 B2Vincere Biosciences, Inc.
- Sulphonamide compounds1 Oct 2026US 2026/0297056 A1Anaxis Pharma Pty Ltd
- Solid state forms of pirtobrutinib and process for the preparation of intermediate thereof17 Sep 2026US 2026/0272883 A1Dr. Reddy's Laboratories, Inc.
- Inhibitors of myc and uses thereof17 Sep 2026US 2026/0274827 A1Northwestern University
- Pai-1 inhibitors and uses thereof20 Aug 2026US 2026/0242355 A1The Cleveland Clinic Foundation
- Substituted pyrrolidone compound, preparation method therefor, composition and application thereof6 Aug 2026US 2026/0223850 A1Qingdao Kingagroot Chemical Compound Co., Ltd.
Most cited
By later US patents
- Oxidation hair dye composition containinng diaminopyrazol derivatives and new diaminopyrazol derivatives423US 5,061,289 AWella Aktiengesellschaft · 1991
- Oxidation hair dye compositions containing 3,4,5-triaminopyrazole derivatives and 3,4,5-triaminopyrazole derivatives374US 5,766,576 AWella Aktiengesellschaft · 1998
- Composition for dyeing keratin fibers which contain at least one diaminopyrazole, dyeing process, novel diaminopyrazoles and process for their preparation340US 6,099,592 AL'oreal · 2000
- Composition for the oxidative dyeing of hair containing 4,5-diaminopyrazole derivatives as well as new 4,5-diaminopyrazole derivatives and process for their synthesis334US 5,534,267 AWella Aktiengesellschaft · 1996
- Composition for dyeing keratin fibers which contain at least one diaminopyrazole, dyeing process, novel diaminopyrazoles and process for their preparation240US 6,645,258 B2L'oreal · 2003