C01B 3/38
Using catalysts
Official title: using catalysts
C01B3/38 (Using catalysts) appears on 3,561 US grants and 4,206 published applications in this corpus.
Search patents in C01B- Granted patents
- 3,561
- Published applications
- 4,206
- Assignees
- 1,258
- Inventors
- 7,153
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 31 | 0 |
| 1977 | 28 | 0 |
| 1978 | 30 | 0 |
| 1979 | 11 | 0 |
| 1980 | 24 | 0 |
| 1981 | 13 | 0 |
| 1982 | 10 | 0 |
| 1983 | 16 | 0 |
| 1984 | 17 | 0 |
| 1985 | 11 | 0 |
| 1986 | 6 | 0 |
| 1987 | 17 | 0 |
| 1988 | 13 | 0 |
| 1989 | 29 | 0 |
| 1990 | 21 | 0 |
| 1991 | 24 | 0 |
| 1992 | 25 | 0 |
| 1993 | 15 | 0 |
| 1994 | 20 | 0 |
| 1995 | 15 | 0 |
| 1996 | 29 | 0 |
| 1997 | 29 | 0 |
| 1998 | 39 | 0 |
| 1999 | 44 | 0 |
| 2000 | 61 | 0 |
| 2001 | 80 | 43 |
| 2002 | 61 | 154 |
| 2003 | 79 | 155 |
| 2004 | 112 | 231 |
| 2005 | 90 | 196 |
| 2006 | 108 | 188 |
| 2007 | 106 | 188 |
| 2008 | 100 | 193 |
| 2009 | 113 | 177 |
| 2010 | 150 | 261 |
| 2011 | 144 | 190 |
| 2012 | 144 | 168 |
| 2013 | 162 | 160 |
| 2014 | 141 | 172 |
| 2015 | 158 | 184 |
| 2016 | 159 | 158 |
| 2017 | 148 | 148 |
| 2018 | 123 | 122 |
| 2019 | 108 | 113 |
| 2020 | 91 | 118 |
| 2021 | 90 | 151 |
| 2022 | 95 | 142 |
| 2023 | 133 | 174 |
| 2024 | 120 | 156 |
| 2025 | 106 | 175 |
| 2026 | 62 | 89 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Complex oxides for reactive oxygen separation and related applications6 Oct 2026US 12,752,260 B2North Carolina State University
- Catalyst reactor15 Sep 2026US 12,734,473 B2Taiyuan University of Technology
- Steam methane reforming with process carbon dioxide capture and ammonia firing15 Sep 2026US 12,735,316 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method for preparing water gas shift catalysts, catalysts and process for reducing carbon monoxide content1 Sep 2026US 12,722,148 B2Petroleo Brasileiro S.A. - Petrobras
- Hybrid partial oxidation and reverse water gas shift based carbon monoxide production system1 Sep 2026US 12,722,972 B2Dioxycle
- Electric radiant heating for direct conversion syngas reactor8 Oct 2026US 2026/0307033 A1Aether Fuels Pte. Ltd.
- Catalyst for methane reforming and manufacturing method thereof8 Oct 2026US 2026/0307056 A1Hanwha Solutions Corporation
- Process for the production of caboxylic acids and carbonyl compounds by utilizing carbon dioxide-rich feedstock1 Oct 2026US 2026/0297010 A1
- Process for producing low-carbon ammonia from natural gas24 Sep 2026US 2026/0285696 A1Publichnoe Aktsionernoe Obshchestvo "NOVATEK"
- Natural gas reforming system and process thereof17 Sep 2026US 2026/0274662 A1Doosan Enerbility Co., Ltd.
Most cited
By later US patents
- Steam reformer with internal hydrogen purification533US 5,861,137 A1999
- Method for simultaneous recovery of hydrogen from water and from hydrocarbons351US 5,525,322 AThe Regents of the University of California · 1996
- Method of methanol production328US 4,927,857 AEngelhard Corporation · 1990
- Synthesis gas production system and method299US 6,085,512 ASyntroleum Corporation · 2000
- Process for converting gas to liquids294US 6,172,124 B2Sybtroleum Corporation · 2001