C07C 241/02
Preparation of hydrazines
C07C241/02 (Preparation of hydrazines) appears on 77 US grants and 46 published applications in this corpus.
Search patents in C07C- Granted patents
- 77
- Published applications
- 46
- Assignees
- 69
- Inventors
- 205
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 1 |
| 2002 | 2 | 0 |
| 2003 | 1 | 2 |
| 2004 | 0 | 0 |
| 2005 | 2 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 3 |
| 2008 | 2 | 2 |
| 2009 | 0 | 2 |
| 2010 | 3 | 2 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 3 |
| 2014 | 1 | 2 |
| 2015 | 4 | 7 |
| 2016 | 4 | 1 |
| 2017 | 1 | 3 |
| 2018 | 1 | 0 |
| 2019 | 2 | 1 |
| 2020 | 0 | 3 |
| 2021 | 2 | 3 |
| 2022 | 1 | 1 |
| 2023 | 1 | 2 |
| 2024 | 3 | 3 |
| 2025 | 0 | 1 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- L-DOPA and/or DOPA decarboxylse inhibitors conjugated to sugar for the treatment of dopamine-responsive disorders27 Jan 2026US 12,533,417 B2B. G. Negev Technologies and Applications Ltd., At Ben-Gurion University
- 3,3'-(hydrazine-1,2-diyl)bis(1-(naphthalen-2-yloxy)propan-2-ol) as an ecofriendly insecticidal agent against spodoptera littoralis (boisd.)15 Oct 2024US 12,116,333 B1King Faisal University
- 3,3′-(hydrazine-1,2-diyl)bis(1-(naphthalen-2-yloxy)propan-2-ol) as an ecofriendly insecticidal agent against Spodoptera littoralis (Boisd.)28 May 2024US 11,993,554 B1King Faisal University
- 3,3′-(hydrazine-1,2-diyl)bis(1-(naphthalen-2-yloxy)propan-2-ol) as an ecofriendly insecticidal agent against Spodoptera littoralis (boisd.)6 Feb 2024US 11,891,353 B1King Faisal University
- Organic amine salt foamer25 Apr 2023US 11,634,552 B2Shandong University of Technology
- Organic Photoredox Catalysts, Compositions, and Conversion Processes24 Sep 2026US 2026/0284647 A1Colorado State University Research Foundation
- Process for preparing azine using reactors in cascade17 Sep 2026US 2026/0274786 A1
- Selective monoarylations of hydrazines8 Jan 2026US 2026/0008747 A1Ruhr-Universitaet Bochum
- Process for preparing modulators of eukaryotic initiation factor 2b11 Dec 2025US 2025/0376432 A1Denali Therapeutics Inc.
- Heterobidentate imidazo[1,5-a]pyridine and imidazo[1,5-a]quinoline n-heterocyclic carbene (nhc) ligands, catalyst complexes thereof, and methods using same21 Nov 2024US 2024/0383894 A1Rutgers, The State University of New Jersey
Most cited
By later US patents
- Metal-catalyzed arylations of hydrazines, hydrazones, and related substrates74US 6,235,936 B1Massachusetts Institute of Technology · 2001
- Metal-catalyzed arylations of hydrazines, hydrazones, and related substrates64US 6,465,693 B2Massachusetts Institute of Technology · 2002
- Preparation of alkylhydrazines53US 4,954,655 ARohm and Haas Company · 1990
- Method for preparation of polyethylene glycol aldehyde derivatives31US 6,465,694 B1University of Utah Research Foundation · 2002
- Fixed bed catalyst22US 3,969,274 ANational Distillers and Chemical Corporation · 1976