B01D 2251/204
Carbon monoxide
B01D2251/204 (Carbon monoxide) appears on 70 US grants and 75 published applications in this corpus.
Search patents in B01D- Granted patents
- 70
- Published applications
- 75
- Assignees
- 79
- Inventors
- 252
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 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 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 3 |
| 2005 | 2 | 2 |
| 2006 | 1 | 1 |
| 2007 | 1 | 4 |
| 2008 | 1 | 3 |
| 2009 | 1 | 6 |
| 2010 | 3 | 8 |
| 2011 | 4 | 1 |
| 2012 | 2 | 5 |
| 2013 | 7 | 0 |
| 2014 | 3 | 2 |
| 2015 | 1 | 7 |
| 2016 | 3 | 3 |
| 2017 | 5 | 2 |
| 2018 | 1 | 3 |
| 2019 | 2 | 4 |
| 2020 | 3 | 2 |
| 2021 | 2 | 2 |
| 2022 | 2 | 3 |
| 2023 | 1 | 5 |
| 2024 | 4 | 3 |
| 2025 | 2 | 3 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Molecular sieve confined noble metal catalyst for CO-SCR denitrification, preparation method and application thereof23 Dec 2025US 12,502,657 B1Institute of Process Engineering, Chinese Academy of Sciences
- Control method for a system having reduced nitrogen oxide emissions and for use in a carbon negative emission method20 May 2025US 12,305,121 B2Zhejiang University
- Catalyst for catalytic reduction of industrial flue gas SO2 with CO to prepare sulfur, method for preparing same and use thereof17 Sep 2024US 12,090,467 B2Nanjing Gekof Institute of Environmental Protection Technology & Equipment Co., Ltd.
- System for reducing voc and nitrogen oxide and method for reducing same17 Sep 2024US 12,092,010 B2Korea Research Institute of Chemical Technology
- System of ultra-low nitrogen oxide emissions, negative carbon emissions and control method thereof7 May 2024US 11,976,242 B2Zhejiang University
- 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
- Processes to Clean Tail Gas from Carbon Black Production and System and Facility for Same4 Dec 2025US 2025/0367600 A1Cabot Corporation
- Apparatus and Method for Removal of Nitrogen Oxides from Exhaust Gas18 Sep 2025US 2025/0288955 A1EnergyLink Corporation
- Nitrous oxide decomposition method and nitrous oxide decomposition device20 Mar 2025US 2025/0091003 A1Sumitomo Chemical Company, Limited
Most cited
By later US patents
- Catalytic EGR oxidizer for IC engines and gas turbines86US 8,061,120 B22011
- Method and system for regenerating NOx adsorbers and/or particulate filters68US 6,832,473 B2Delphi Technologies, Inc. · 2004
- Sulfur oxide and particulate removal system66US 4,622,210 AStandard Oil Company (Indiana) · 1986
- Catalytic perovskites on perovskite supports and process for preparing them55US 4,151,123 AE. I. Du Pont de Nemours and Company · 1979
- Process for simultaneously removing nitrogen oxides, sulfur oxides, and particulates48US 4,692,318 AAmoco Corporation · 1987