C01B 21/14
Hydroxylamine
Official title: Hydroxylamine; Salts thereof
C01B21/14 (Hydroxylamine) appears on 157 US grants and 50 published applications in this corpus.
Search patents in C01B- Granted patents
- 157
- Published applications
- 50
- Assignees
- 49
- Inventors
- 256
- Latest grant
- 9 Oct 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 7 | 0 |
| 1994 | 8 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 9 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 8 | 1 |
| 2002 | 2 | 0 |
| 2003 | 4 | 3 |
| 2004 | 3 | 12 |
| 2005 | 4 | 3 |
| 2006 | 5 | 3 |
| 2007 | 3 | 6 |
| 2008 | 5 | 4 |
| 2009 | 5 | 6 |
| 2010 | 3 | 1 |
| 2011 | 1 | 2 |
| 2012 | 1 | 2 |
| 2013 | 1 | 3 |
| 2014 | 3 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 2 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Efficient process for the synthesis of cyclic amides9 Oct 2018US 10,093,622 B2Anthea Aromatics Private Limited
- Hydroxylammonium nitrate monopropellant with burn rate modifier7 Aug 2018US 10,040,730 B2Aerojet Rocketdyne, Inc.
- Methods and systems for the reduction of molecules using diamond as a photoreduction catalyst18 Jul 2017US 9,708,716 B2Wisconsin Alumni Research Foundation
- Methods and systems for the reduction of molecules using diamond as a photoreduction catalyst24 Mar 2015US 8,986,532 B2Wisconsin Alumni Research Foundation
- Process for removing NO and N2O from gas mixtures25 Nov 2014US 8,894,960 B2BASF SE
- Bioorthogonal reaction suitable for click/unclick applications23 May 2024US 2024/0165259 A1Dana-Farber Cancer Institute, Inc.
- An efficient process for the synthesis of cyclic amides5 Apr 2018US 2018/0093949 A1Anthea Aromatics Private Limited
- Hydroxylammonium nitrate monopropellant with burn rate modifier15 Jun 2017US 2017/0166491 A1Aerojet Rocketdyne, Inc.
- Methods and systems for the reduction of molecules using diamond as a photoreduction catalyst22 Oct 2015US 2015/0299870 A1Wisconsin Alumni Research Foundation
- Process for removing hydrazine from hydroxlyamine solutions28 Nov 2013US 2013/0315812 A1Cytec Technology Corp.
Most cited
By later US patents
- Process for preparing noble metal catalysts35US 4,052,336 AStamicarbon B. V. · 1977
- Gauze catalyst based on titanium or vanadium zeolites and inert gauze fabrics for accelerating oxidation reactions31US 6,106,797 ABASF SE · 2000
- Platinum-on-graphite catalysts and the use thereof24US 5,120,699 ABASF SE · 1992
- Synthesis of hydroxylamine salts20US 4,956,168 AThe United States of America as represented by the Secretary of the Navy · 1990
- Electrochemical conversion of nitrogen containing gas to hydroxylamine and hydroxylammonium salts19US 5,709,789 ASachem, Inc. · 1998