C01B 21/16
Hydrazine
Official title: Hydrazine; Salts thereof
C01B21/16 (Hydrazine) appears on 57 US grants and 26 published applications in this corpus.
Search patents in C01B- Granted patents
- 57
- Published applications
- 26
- Assignees
- 33
- Inventors
- 130
- Latest grant
- 31 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 4 | 0 |
| 2004 | 1 | 0 |
| 2005 | 1 | 2 |
| 2006 | 2 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 2 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 2 | 1 |
| 2015 | 1 | 3 |
| 2016 | 1 | 1 |
| 2017 | 1 | 1 |
| 2018 | 0 | 1 |
| 2019 | 2 | 1 |
| 2020 | 0 | 1 |
| 2021 | 2 | 0 |
| 2022 | 1 | 2 |
| 2023 | 0 | 0 |
| 2024 | 2 | 1 |
| 2025 | 0 | 2 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for preparing hydrazine hydrate with oxime recycling31 Dec 2024US 12,180,070 B2Arkema France
- Process for preparing hydrazine hydrate with pyrazoline recycling5 Nov 2024US 12,134,558 B2Arkema France
- Process for production of hydrazine hydrate18 Jan 2022US 11,225,413 B2Council of Scientific and Industrial Research
- Method for storing energy in the form of hydrazine carbonate17 Aug 2021US 11,091,845 B2Schaeffler Technologies AG & Co. KG
- Removal of moisture from hydrazine8 Jun 2021US 11,027,974 B2Matheson Tri-Gas, Inc.
- Method of manufacture for hydrazine composition30 Jul 2026US 2026/0217531 A1Aerojet Rocketdyne, Inc.
- Capture And Selective Release Of Biological Material16 Apr 2026US 2026/0103699 A1Illumina, Inc.
- Process for preparing hydrazine hydrate using an absorption column11 Dec 2025US 2025/0376376 A1
- Process for preparing hydrazine hydrate in the presence of an anti-foaming agent13 Feb 2025US 2025/0051164 A1
- Methods utilizing active quantum chemistry26 Sep 2024US 2024/0317612 A1
Most cited
By later US patents
- Solution-based deposition process for metal chalcogenides45US 7,494,841 B2International Business Machines Corporation · 2009
- Mobile atom insertion reaction, mobile atom transmissive membrane for carrying out the reaction, and reactor incorporating the mobile atom transmissive membrane44US 4,908,114 A1990
- Enhancing chemical reactions27US 4,124,466 ABattelle Memorial Institute · 1978
- Plasma reactor for carrying out gas reactions and method for the plasma-supported reaction of gases25US 8,636,960 B2Iplas GmbH · 2014
- Dehydrogenation reaction utilizing mobile atom transmissive membrane21US 5,141,604 AElectron Transfer Technologies, Inc. · 1992