B01D 2251/208
Hydrocarbons
B01D2251/208 (Hydrocarbons) appears on 427 US grants and 416 published applications in this corpus.
Search patents in B01D- Granted patents
- 427
- Published applications
- 416
- Assignees
- 239
- Inventors
- 1,106
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 8 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 18 | 0 |
| 1999 | 16 | 0 |
| 2000 | 17 | 0 |
| 2001 | 10 | 0 |
| 2002 | 5 | 5 |
| 2003 | 5 | 6 |
| 2004 | 6 | 5 |
| 2005 | 6 | 9 |
| 2006 | 3 | 9 |
| 2007 | 1 | 8 |
| 2008 | 7 | 27 |
| 2009 | 5 | 38 |
| 2010 | 18 | 47 |
| 2011 | 15 | 26 |
| 2012 | 34 | 28 |
| 2013 | 35 | 35 |
| 2014 | 32 | 21 |
| 2015 | 26 | 21 |
| 2016 | 19 | 21 |
| 2017 | 16 | 16 |
| 2018 | 16 | 7 |
| 2019 | 13 | 14 |
| 2020 | 12 | 14 |
| 2021 | 8 | 4 |
| 2022 | 6 | 15 |
| 2023 | 7 | 17 |
| 2024 | 16 | 8 |
| 2025 | 7 | 6 |
| 2026 | 5 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Photochemical method and device for volatile organic compound pollution control22 Sep 2026US 12,741,248 B2Ambient Carbon Methane Holding Aps
- Systems and methods for controlling tailpipe exhaust emissions14 Jul 2026US 12,680,490 B2Cummins Inc.
- Photochemical method and device for volatile organic compound pollution control23 Jun 2026US 12,661,616 B2Ambient Carbon Methane Holding Aps
- Gas production apparatus, gas production system, steel production system, chemical manufacturing system, and gas production method with reduced carbon dioxide emission24 Mar 2026US 12,582,941 B2Sekisui Chemical Co., Ltd.
- Optimising operating conditions in an abatement apparatus27 Jan 2026US 12,533,631 B2Edwards Limited
- Catalytic reactor and system for purification of carbon dioxide streams and methods of using the same8 Oct 2026US 2026/0307007 A1Oxy Low Carbon Ventures, LLC
- Systems and methods for controlling tailpipe exhaust emissions1 Oct 2026US 2026/0298125 A1Cummins Inc.
- Exhaust aftertreatment system24 Sep 2026US 2026/0286878 A1Donaldson Company, Inc.
- Reducing the content of nox and n2o in the offgas from firing plants operated with nh3 for catalytic decomposition of nh330 Jul 2026US 2026/0216648 A1
- Reduction of nox and n2o in the exhaust gas of ship motors operated using nh330 Jul 2026US 2026/0216649 A1
Most cited
By later US patents
- NOx decreasing apparatus for an internal combustion engine153US 5,412,946 AKabushiki Kaisha Toyota Chuo Kenkyusho · 1995
- Method for converting exhaust gases from a diesel engine using nitrogen oxide absorbent96US 6,182,443 B2Ford Global Technologies, LLC · 2001
- Catalyst for catalytic reduction of nitrogen oxide94US 5,380,692 AAgency of Industrial Science and Technology · 1995
- Thermally regenerable nitric oxide adsorbent90US 8,105,559 B2Johnson Matthey Public Limited Company · 2012
- Rare earth containing catalyst composition76US 3,993,572 AEngelhard Minerals & Chemicals Corporation · 1976