B01D 53/9436
Ammonia
Official title: {Ammonia}
B01D53/9436 (Ammonia) appears on 179 US grants and 223 published applications in this corpus.
Search patents in B01D- Granted patents
- 179
- Published applications
- 223
- Assignees
- 78
- Inventors
- 514
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 3 |
| 2009 | 3 | 9 |
| 2010 | 3 | 4 |
| 2011 | 2 | 5 |
| 2012 | 3 | 3 |
| 2013 | 3 | 7 |
| 2014 | 5 | 11 |
| 2015 | 3 | 13 |
| 2016 | 8 | 11 |
| 2017 | 11 | 10 |
| 2018 | 13 | 31 |
| 2019 | 20 | 24 |
| 2020 | 24 | 9 |
| 2021 | 15 | 10 |
| 2022 | 10 | 17 |
| 2023 | 20 | 19 |
| 2024 | 8 | 19 |
| 2025 | 15 | 6 |
| 2026 | 4 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Selective ammonia oxidation catalyst19 May 2026US 12,629,662 B2BASF Mobile Emissions Catalysts LLC
- Selective catalytic reduction catalyst and a process for preparing a selective catalytic reduction catalyst10 Mar 2026US 12,569,810 B2BASF Mobile Emissions Catalysts LLC
- Engine system comprising a hydrogen combustion engine10 Mar 2026US 12,571,338 B2Volvo Truck Corporation
- Catalyst for the abatement of ammonia and nitrogen oxide emissions from the exhaust gases of combustion engines3 Feb 2026US 12,539,493 B2Umicore AG & Co. KG
- Catalyst for reducing ammonia emissions30 Dec 2025US 12,508,576 B2Umicore AG & Co. KG
- An exhaust gas treatment system for treating an exhaust gas stream exiting a gasoline engine1 Oct 2026US 2026/0295528 A1
- Systems and methods for diesel oxidation catalyst aging prognostics and diagnosis27 Aug 2026US 2026/0249244 A1Cummins Inc.
- System for treating exhaust gas from nitrogen-containing-fuel- or hydrogen-combustor6 Aug 2026US 2026/0225040 A1Johnson Matthey Public Limited Company
- Reduction of nox and n2o in the exhaust gas of ship motors operated using nh330 Jul 2026US 2026/0216649 A1
- A multifunctional catalyst system30 Jul 2026US 2026/0216650 A1Dinex A/S
Most cited
By later US patents
- Catalysts for the reduction of ammonia emission from rich-burn exhaust92US 8,101,146 B2Johnson Matthey Public Limited Company · 2012
- Device for purifying exhaust gas of an engine39US 5,782,087 AToyota Jidosha Kabushiki Kaisha · 1998
- Method for purifying combustion exhaust gas33US 5,783,160 AToyota Jidosha Kabushiki Kaisha · 1998
- Catalyst manufacturing method31US 9,278,338 B2Johnson Matthey PLC · 2016
- Exhaust gas purification device for ship28US 10,605,144 B2Yanmar Co., Ltd. · 2020