B01D 53/8634
Ammonia
Official title: {Ammonia}
B01D53/8634 (Ammonia) appears on 122 US grants and 116 published applications in this corpus.
Search patents in B01D- Granted patents
- 122
- Published applications
- 116
- Assignees
- 112
- Inventors
- 415
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 4 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 5 | 0 |
| 1997 | 8 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 2 |
| 2004 | 0 | 3 |
| 2005 | 1 | 4 |
| 2006 | 0 | 4 |
| 2007 | 1 | 5 |
| 2008 | 2 | 4 |
| 2009 | 2 | 4 |
| 2010 | 4 | 4 |
| 2011 | 4 | 5 |
| 2012 | 9 | 6 |
| 2013 | 3 | 5 |
| 2014 | 1 | 1 |
| 2015 | 4 | 7 |
| 2016 | 3 | 7 |
| 2017 | 3 | 6 |
| 2018 | 8 | 6 |
| 2019 | 3 | 3 |
| 2020 | 4 | 4 |
| 2021 | 5 | 7 |
| 2022 | 5 | 8 |
| 2023 | 6 | 10 |
| 2024 | 4 | 3 |
| 2025 | 5 | 3 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Filter for air purification and manufacturing method thereof15 Sep 2026US 12,734,512 B2Hyundai Motor Company
- Air purifier with air treatment basket30 Jun 2026US 12,667,809 B2BISSELL Inc.
- Catalytic decomposition device and integrated waste gas treatment system25 Nov 2025US 12,478,922 B2Samsung Electronics Co., Ltd.
- Catalyst system and method for the catalytic combustion of ammonia to form nitrogen oxides in a medium-pressure system5 Aug 2025US 12,378,115 B2Heraeus Deutschland GmbH & Co. KG
- Exhaust gas treatment system10 Jun 2025US 12,325,003 B2Johnson Matthey Public Limited Company
- Nh3-scr denitration system and method for synergistic purification of co21 May 2026US 2026/0138087 A1Institute of Process Engineering, Chinese Academy of Sciences
- Highly active ag/al2o3 catalyst and preparation method thereof14 May 2026US 2026/0131314 A1Gwangju Institute of Science and Technology
- Integrated catalytic reactor, and exhaust gas integrated treatment system including the same19 Mar 2026US 2026/0077311 A1CTP KOREA Co., Ltd
- Catalytic decomposition device and integrated waste gas treatment system26 Feb 2026US 2026/0054220 A1Samsung Electronics Co., Ltd.
- Exhaust gas treatment apparatus, combustion facility, power generation facility, and exhaust gas treatment method14 Aug 2025US 2025/0256242 A1Mitsubishi Heavy Industries, Ltd.
Most cited
By later US patents
- Photocatalytic air treatment process under room light56US 5,874,701 AToto Ltd. · 1999
- Hydrogen-selective membrane52US 5,652,020 AState of Oregon acting by and through the State Board of Higher Education on behalf of Oregon State University · 1997
- Method of decomposing ammonia using a ruthenium catalyst38US 5,055,282 ANKK Corporation · 1991
- Photocatalytic air treatment process under room light36US 6,139,803 AToto Ltd. · 2000
- Method for treating ammonia-containing gases35US 4,003,978 ASumitomo Chemical Company, Limited · 1977