C01B 2203/0435
Catalytic purification
C01B2203/0435 (Catalytic purification) appears on 1,016 US grants and 1,184 published applications in this corpus.
Search patents in C01B- Granted patents
- 1,016
- Published applications
- 1,184
- Assignees
- 406
- Inventors
- 2,182
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 7 | 0 |
| 1989 | 7 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 6 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 11 | 0 |
| 1999 | 13 | 0 |
| 2000 | 26 | 0 |
| 2001 | 26 | 21 |
| 2002 | 33 | 81 |
| 2003 | 46 | 91 |
| 2004 | 52 | 98 |
| 2005 | 42 | 70 |
| 2006 | 42 | 83 |
| 2007 | 51 | 78 |
| 2008 | 50 | 75 |
| 2009 | 53 | 57 |
| 2010 | 59 | 85 |
| 2011 | 57 | 65 |
| 2012 | 60 | 48 |
| 2013 | 45 | 41 |
| 2014 | 37 | 25 |
| 2015 | 50 | 40 |
| 2016 | 36 | 31 |
| 2017 | 28 | 26 |
| 2018 | 22 | 17 |
| 2019 | 22 | 22 |
| 2020 | 16 | 18 |
| 2021 | 18 | 17 |
| 2022 | 10 | 18 |
| 2023 | 18 | 24 |
| 2024 | 12 | 30 |
| 2025 | 10 | 15 |
| 2026 | 5 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Oxygen transport membrane reactors for decarbonization25 Aug 2026US 12,715,765 B2Praxair Technology, Inc.
- Chemical synthesis plant5 May 2026US 12,617,679 B2Haldor TopsøE A/S
- Direct coupled atmospheric carbon reduction device with hydrogen utilization24 Mar 2026US 12,583,744 B2
- Systems, devices and methods for input and output pressure management of air breathing engine reformers10 Mar 2026US 12,570,526 B2M2X Energy Inc.
- Ammonia and urea production in reverse flow reactors3 Mar 2026US 12,565,422 B2ExxonMobil Technology and Engineering Company
- Steam-Hydrocarbon Reforming with Reduced Carbon Dioxide Emissions8 Oct 2026US 2026/0307987 A1Air Products and Chemicals, Inc.
- Process and apparatus for hydrogen production with low carbon dioxide levels8 Oct 2026US 2026/0307989 A1
- Production and/or regasification of bio-lng20 Aug 2026US 2026/0242672 A1Iogen Corporation
- Method for producing ammonia with reduced emissions and system thereof13 Aug 2026US 2026/0234011 A1Yara Clean Ammonia AS
- Process for producing very high purity helium or hydrogen30 Jul 2026US 2026/0217533 A1Air Liquide Advanced Technologies U.S. LLC
Most cited
By later US patents
- Steam reformer with internal hydrogen purification533US 5,861,137 A1999
- Microcomponent chemical process sheet architecture299US 5,811,062 ABattelle Memorial Institute · 1998
- Steam reformer with internal hydrogen purification269US 5,997,594 ANorthwest Power Systems, LLC · 1999
- Hydrogen producing fuel processing system236US 6,221,117 B1IdaTech, LLC · 2001
- Fuel cell electric power production199US 4,522,894 AEngelhard Corporation · 1985