C01B 21/30
Preparation by oxidation of nitrogen
Official title: Preparation by oxidation of nitrogen {(C01B21/26 takes precedence)}
C01B21/30 (Preparation by oxidation of nitrogen) appears on 70 US grants and 83 published applications in this corpus.
Search patents in C01B- Granted patents
- 70
- Published applications
- 83
- Assignees
- 36
- Inventors
- 102
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 0 |
| 2003 | 1 | 2 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 1 | 4 |
| 2013 | 1 | 1 |
| 2014 | 2 | 4 |
| 2015 | 4 | 1 |
| 2016 | 0 | 1 |
| 2017 | 3 | 4 |
| 2018 | 2 | 8 |
| 2019 | 3 | 9 |
| 2020 | 4 | 8 |
| 2021 | 5 | 10 |
| 2022 | 6 | 5 |
| 2023 | 5 | 4 |
| 2024 | 6 | 7 |
| 2025 | 4 | 6 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for the synthesis of nitrogen oxides and nitric acid in a thermal reactor25 Aug 2026US 12,715,769 B2Nitrocapt AB
- Conversion of nitrogen dioxide (NO2) to nitric oxide (NO)14 Jul 2026US 12,679,729 B2VERO Biotech Inc.
- Systems and methods for nitric oxide generation with humidity control21 Apr 2026US 12,606,436 B2Third Pole, Inc.
- Systems and methods for generating nitric oxide17 Mar 2026US 12,576,234 B2Third Pole, Inc.
- Nitric oxide generation process controls30 Dec 2025US 12,509,349 B2Third Pole, Inc.
- Nitric oxide generation process controls13 Aug 2026US 2026/0233997 A1Third Pole, Inc.
- Systems and Methods for Nitric Oxide Generation with Humidity Control30 Jul 2026US 2026/0217532 A1Third Pole, Inc.
- Method for the Synthesis of Nitrogen Oxides and Nitric Acid in a Thermal Reactor21 May 2026US 2026/0143165 A2Nitrocapt AB
- Ammonium nitrate production18 Dec 2025US 2025/0381545 A1Katholieke Universiteit Leuven
- Magnetic Plasma System for Infusing Various Compounds with Nitric Oxide for Consumable, Medical and Cosmetic Products20 Nov 2025US 2025/0353746 A1AJPlasmatech LLC
Most cited
By later US patents
- Production of nitric oxides97US 4,287,040 AG. D. Societa per Azioni · 1981
- Method and apparatus for the production of nitric oxide gas mixture95US 5,692,495 AThe BOC Group, Inc. · 1997
- Nitrogen fixation by electric arc and catalyst69US 4,877,589 A1989
- Plasma method and apparatus for the production of compounds from gas mixtures, particularly useful for the production of nitric oxides from atmospheric air50US 4,505,795 A1985
- Apparatus for plasma-chemical production of nitrogen monoxide48US 6,955,790 B2Maquet Critical Care AB · 2005