C07C 251/72
Hydrazones
C07C251/72 (Hydrazones) appears on 623 US grants and 392 published applications in this corpus.
Search patents in C07C- Granted patents
- 623
- Published applications
- 392
- Assignees
- 323
- Inventors
- 1,506
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 31 | 0 |
| 1977 | 14 | 0 |
| 1978 | 16 | 0 |
| 1979 | 17 | 0 |
| 1980 | 14 | 0 |
| 1981 | 22 | 0 |
| 1982 | 5 | 0 |
| 1983 | 9 | 0 |
| 1984 | 14 | 0 |
| 1985 | 8 | 0 |
| 1986 | 10 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 7 | 0 |
| 1991 | 9 | 0 |
| 1992 | 6 | 0 |
| 1993 | 11 | 0 |
| 1994 | 12 | 0 |
| 1995 | 8 | 0 |
| 1996 | 10 | 0 |
| 1997 | 11 | 0 |
| 1998 | 7 | 0 |
| 1999 | 10 | 0 |
| 2000 | 12 | 0 |
| 2001 | 17 | 4 |
| 2002 | 17 | 8 |
| 2003 | 17 | 10 |
| 2004 | 8 | 17 |
| 2005 | 11 | 12 |
| 2006 | 11 | 18 |
| 2007 | 7 | 10 |
| 2008 | 9 | 19 |
| 2009 | 6 | 13 |
| 2010 | 11 | 15 |
| 2011 | 11 | 19 |
| 2012 | 11 | 26 |
| 2013 | 15 | 23 |
| 2014 | 29 | 24 |
| 2015 | 30 | 24 |
| 2016 | 18 | 18 |
| 2017 | 22 | 16 |
| 2018 | 9 | 21 |
| 2019 | 14 | 14 |
| 2020 | 15 | 16 |
| 2021 | 11 | 17 |
| 2022 | 18 | 18 |
| 2023 | 7 | 11 |
| 2024 | 7 | 9 |
| 2025 | 10 | 5 |
| 2026 | 7 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C07C 251/86Having doubly-bound carbon atoms of hydrazone groups bound to carbon atoms of245
- C07C 251/74Having doubly-bound carbon atoms of hydrazone groups bound to hydrogen atoms or161
- C07C 251/88Having also the other nitrogen atom doubly-bound to a carbon atom88
- C07C 251/84Having doubly-bound carbon atoms of hydrazone groups being part of rings other39
- C07C 251/82Having doubly-bound carbon atoms of hydrazone groups bound to carbon atoms of12
Recent patents
- Materials and methods for iodine capture30 Jun 2026US 12,671,088 B2University of Houston System
- Precursor compounds of ester compounds16 Jun 2026US 12,655,092 B2University of Guelph
- Styryl carboxylate derivatives26 May 2026US 12,637,409 B2Renovel Innovations, Inc.
- Herbicidal malonamides28 Apr 2026US 12,612,394 B2BASF SE
- Synthetic methods of making (2H-1, 2, 3-triazol-2-yl) phenyl compounds as orexin receptor modulators10 Mar 2026US 12,570,658 B2Janssen Pharmaceutica NV
- Synthetic methods of making (2h-1, 2, 3-triazol-2-yl) phenyl compounds as orexin receptor modulators1 Oct 2026US 2026/0297096 A1Janssen Pharmaceutica NV
- Materials and methods for iodine capture24 Sep 2026US 2026/0290827 A1University of Houston System
- Novel lipids and compositions for the delivery of therapeutics13 Aug 2026US 2026/0232810 A1Arbutus Biopharma Corporation
- Tunable and long-lived light reflection from liquid crystals using hydrazone dopants23 Jul 2026US 2026/0209172 A1Trustees of Dartmouth College
- 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
- Insecticidal N'-substituted-N,N'-disubstitutedhydrazines107US 6,013,836 ARohm and Haas Company · 2000
- Lipids and compositions for the delivery of therapeutics102US 8,999,351 B2Tekmira Pharmaceuticals Corporation · 2015
- Lipids and compositions for the delivery of therapeutics101US 9,186,325 B2Tekmira Pharmaceuticals Corporation · 2015
- 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
- Colorant compounds84US 7,381,831 B1Xerox Corporation · 2008