B01J 38/08
Using ammonia or derivatives thereof
Official title: using ammonia or derivatives thereof
B01J38/08 (Using ammonia or derivatives thereof) appears on 30 US grants and 25 published applications in this corpus.
Search patents in B01J- Granted patents
- 30
- Published applications
- 25
- Assignees
- 28
- Inventors
- 122
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 4 |
| 2015 | 2 | 0 |
| 2016 | 0 | 1 |
| 2017 | 3 | 5 |
| 2018 | 4 | 1 |
| 2019 | 1 | 3 |
| 2020 | 1 | 0 |
| 2021 | 3 | 1 |
| 2022 | 2 | 2 |
| 2023 | 0 | 0 |
| 2024 | 0 | 2 |
| 2025 | 3 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Regeneration method and application of nitrogen-containing carbon catalyst14 Oct 2025US 12,440,829 B2Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- Method for treating or regenerating metal catalyst and application23 Sep 2025US 12,420,274 B2Beijing Single Atom Site Catalysis Technology Co., Ltd
- Method of equipment decontamination11 Feb 2025US 12,220,690 B2United Laboratories International, LLC
- Porous carbon-based metal catalyst as well as preparation method and application thereof28 Jun 2022US 11,370,659 B2Cqc Intime Testing Technology Co., Ltd.
- Method for activating hydrotreating catalysts31 May 2022US 11,344,866 B2Arkema France
- Method of Equipment Decontamination8 May 2025US 2025/0144612 A1United Laboratories International, LLC
- Preparation of a catalyst for the oxidative esterification of methacrolein to methyl methacrylate, for extending service life24 Oct 2024US 2024/0351972 A1Rohm Co., Ltd.
- Method for treating or regenerating metal catalyst and application21 Mar 2024US 2024/0091760 A1Beijing Single Atom Site Catalysis Technology Co., Ltd
- Regeneration method and application of nitrogen-containing carbon catalyst4 Aug 2022US 2022/0241759 A1Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- Porous carbon-based metal catalyst as well as preparation method and application thereof31 Mar 2022US 2022/0098033 A1Cqc Intime Testing Technology Co., Ltd.
Most cited
By later US patents
- Sulfur removal from molecular-sieve catalyst27US 5,270,272 AUop LLC · 1993
- Treatment of spent cracking catalysts16US 4,954,244 APhillips Petroleum Company · 1990
- Hydrocracking process with reactivated catalyst14US 4,107,031 AUnion Oil Company of California · 1978
- Process for passivating high activity transition metal sulfide catalysts13US 4,740,491 AGas Research Institute · 1988
- Method and apparatus for treating dehydrogenation catalysts9US 5,686,369 ARaytheon Engineers & Constructors, Inc. · 1997