C01B 21/26
Preparation by catalytic or non-catalytic oxidation of ammonia
Official title: Preparation by catalytic {or non-catalytic} oxidation of ammonia
C01B21/26 (Preparation by catalytic or non-catalytic oxidation of ammonia) appears on 237 US grants and 160 published applications in this corpus.
Search patents in C01B- Granted patents
- 237
- Published applications
- 160
- Assignees
- 118
- Inventors
- 427
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 10 | 0 |
| 1978 | 17 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 5 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 9 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 1 |
| 2002 | 3 | 2 |
| 2003 | 5 | 8 |
| 2004 | 4 | 9 |
| 2005 | 3 | 2 |
| 2006 | 3 | 1 |
| 2007 | 3 | 2 |
| 2008 | 2 | 1 |
| 2009 | 5 | 2 |
| 2010 | 0 | 6 |
| 2011 | 1 | 5 |
| 2012 | 5 | 6 |
| 2013 | 4 | 11 |
| 2014 | 6 | 7 |
| 2015 | 7 | 11 |
| 2016 | 8 | 2 |
| 2017 | 9 | 5 |
| 2018 | 2 | 4 |
| 2019 | 6 | 6 |
| 2020 | 4 | 10 |
| 2021 | 7 | 4 |
| 2022 | 4 | 9 |
| 2023 | 5 | 15 |
| 2024 | 6 | 10 |
| 2025 | 6 | 11 |
| 2026 | 6 | 10 |
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
- Precious metal mesh for catalyzing gas-phase reactions5 May 2026US 12,616,967 B2Umicore AG & Co. KG
- Noble metal net for catalyzing gas phase reactions, production method for same, and use of same in an ammonia oxidation method28 Apr 2026US 12,611,662 B2Umicore AG & Co. KG
- Process and plant for preparing nitric acid10 Mar 2026US 12,570,532 B2thyssenkrupp AG
- Apparatus and process for conversion of ammonia into oxides of nitrogen3 Mar 2026US 12,565,427 B2Deepak Nitrite Limited
- 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
- Catalyst system for a flow reactor, and method for the catalytic oxidation of ammonia2 Jul 2026US 2026/0183751 A1Heraeus Precious Metals GmbH & Co. KG
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 device for transforming chemical compositions120US 6,214,195 B1Nanomaterials Research Corporation · 2001
- Field assisted transformation of chemical and material compositions99US 6,267,864 B1Nanomaterials Research Corporation · 2001