C01B 21/24
Nitric oxide
Official title: Nitric oxide (NO) {(C01B21/203 takes precedence)}
C01B21/24 (Nitric oxide) appears on 446 US grants and 437 published applications in this corpus.
Search patents in C01B- Granted patents
- 446
- Published applications
- 437
- Assignees
- 218
- Inventors
- 756
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 11 | 0 |
| 1978 | 19 | 0 |
| 1979 | 5 | 0 |
| 1980 | 5 | 0 |
| 1981 | 8 | 0 |
| 1982 | 4 | 0 |
| 1983 | 7 | 0 |
| 1984 | 8 | 0 |
| 1985 | 7 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 8 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 10 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 7 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 7 | 2 |
| 2002 | 3 | 2 |
| 2003 | 6 | 11 |
| 2004 | 4 | 12 |
| 2005 | 4 | 5 |
| 2006 | 5 | 5 |
| 2007 | 4 | 4 |
| 2008 | 3 | 4 |
| 2009 | 7 | 9 |
| 2010 | 3 | 15 |
| 2011 | 7 | 9 |
| 2012 | 12 | 18 |
| 2013 | 13 | 23 |
| 2014 | 16 | 22 |
| 2015 | 17 | 27 |
| 2016 | 16 | 8 |
| 2017 | 22 | 20 |
| 2018 | 12 | 20 |
| 2019 | 15 | 23 |
| 2020 | 17 | 26 |
| 2021 | 17 | 27 |
| 2022 | 19 | 23 |
| 2023 | 19 | 33 |
| 2024 | 17 | 29 |
| 2025 | 18 | 33 |
| 2026 | 14 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Gauzes having a tertiary structure for the catalytic conversion of fluids15 Sep 2026US 12,734,513 B2
- Nitric oxide water generation system having purifying part for automatically purifying water in reaction chamber8 Sep 2026US 12,729,118 B2
- 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.
- Nitric oxide generating systems30 Jun 2026US 12,667,686 B2NOTA Laboratories, LLC
- Method for selectively recovering volatile pt or pd10 Sep 2026US 2026/0265057 A1Yara International Asa
- Apparatus for production of ammonium nitrate from nitric acid and ammonia13 Aug 2026US 2026/0233190 A1thyssenkrupp AG
- Nitric oxide generation process controls13 Aug 2026US 2026/0233997 A1Third Pole, Inc.
- Precious metal mesh for catalyzing gas-phase reactions6 Aug 2026US 2026/0225091 A1Umicore AG & Co. KG
- Systems and Methods for Nitric Oxide Generation with Humidity Control30 Jul 2026US 2026/0217532 A1Third Pole, Inc.
Most cited
By later US patents
- Method and apparatus for the generation of nitric oxide499US 5,827,420 AWorld Precision Instruments, Inc. · 1998
- Apparatus for on-site production of nitrate ions409US 7,514,058 B1The Lata Group, Inc. · 2009
- Nanotechnology for engineering the performance of substances140US 6,531,704 B2NanoProducts Corporation · 2003
- Method and apparatus for nitric oxide generation135US 7,040,313 B2CyTerra Corporation · 2006
- Method and device for transforming chemical compositions120US 6,214,195 B1Nanomaterials Research Corporation · 2001