C01B 3/506
At low temperatures
Official title: at low temperatures
C01B3/506 (At low temperatures) appears on 226 US grants and 294 published applications in this corpus.
Search patents in C01B- Granted patents
- 226
- Published applications
- 294
- Assignees
- 137
- Inventors
- 608
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 5 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 7 | 0 |
| 2002 | 4 | 7 |
| 2003 | 3 | 3 |
| 2004 | 3 | 0 |
| 2005 | 2 | 9 |
| 2006 | 3 | 10 |
| 2007 | 4 | 6 |
| 2008 | 4 | 5 |
| 2009 | 3 | 10 |
| 2010 | 7 | 10 |
| 2011 | 3 | 17 |
| 2012 | 5 | 28 |
| 2013 | 11 | 10 |
| 2014 | 10 | 3 |
| 2015 | 10 | 9 |
| 2016 | 2 | 13 |
| 2017 | 4 | 8 |
| 2018 | 10 | 14 |
| 2019 | 11 | 10 |
| 2020 | 6 | 13 |
| 2021 | 8 | 12 |
| 2022 | 11 | 13 |
| 2023 | 7 | 27 |
| 2024 | 9 | 19 |
| 2025 | 12 | 27 |
| 2026 | 10 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process and plant for producing pure hydrogen by steam reforming with low carbon dioxide emissions25 Aug 2026US 12,715,766 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Processes and systems for upgrading a hydrocarbon-containing feed4 Aug 2026US 12,698,451 B2ExxonMobil Chemical Patents Inc.
- Biomass pyrolysis integrated with bio-reduction of metal ores, hydrogen production, and/or activated-carbon production9 Jun 2026US 12,649,959 B2Carbon Technology Holdings, LLC
- Carbon neutral hydrogen production2 Jun 2026US 12,643,790 B2Saudi Arabian Oil Company
- Process and apparatus for separating a mixture of hydrogen and carbon dioxide19 May 2026US 12,629,630 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Carbon neutral hydrogen production24 Sep 2026US 2026/0285681 A1Saudi Arabian Oil Company
- Methanol Production System that Reuses Unreacted Gas for Efficient Methanol Production10 Sep 2026US 2026/0264037 A1Doosan Enerbility Co., Ltd.
- Process for producing hydrogen10 Sep 2026US 2026/0265053 A1Johnson Matthey Davy Technologies Limited
- Plant and process for producing hydrogen from hydrocarbons20 Aug 2026US 2026/0242219 A1Technip Energies France
- Systems and methods for generating hydrogen from iron ore tailings30 Jul 2026US 2026/0217524 A1Alliance for Energy Innovation, LLC
Most cited
By later US patents
- Process for recovering hydrogen from a multi-component gas stream113US 4,654,063 AAir Products and Chemicals, Inc. · 1987
- Hydrogen and carbon dioxide coproduction88US 6,500,241 B2Fluor Corporation · 2002
- Integrated processing of natural gas into liquid products87US 6,743,829 B2BP Corporation North America Inc. · 2004
- Process for hydrogen production via integrated processing of landfill gas and biomass70US 7,691,182 B1University of Central Florida Research Foundation, Inc. · 2010
- Method and apparatus for adjustably treating a sour gas58US 8,518,356 B2Air Products and Chemicals, Inc. · 2013