C01B 2203/046
Purification by cryogenic separation
C01B2203/046 (Purification by cryogenic separation) appears on 241 US grants and 381 published applications in this corpus.
Search patents in C01B- Granted patents
- 241
- Published applications
- 381
- Assignees
- 144
- Inventors
- 707
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 0 |
| 2002 | 5 | 5 |
| 2003 | 3 | 2 |
| 2004 | 1 | 3 |
| 2005 | 3 | 5 |
| 2006 | 2 | 7 |
| 2007 | 0 | 7 |
| 2008 | 2 | 8 |
| 2009 | 6 | 16 |
| 2010 | 7 | 10 |
| 2011 | 5 | 16 |
| 2012 | 8 | 24 |
| 2013 | 8 | 11 |
| 2014 | 8 | 26 |
| 2015 | 11 | 19 |
| 2016 | 15 | 16 |
| 2017 | 11 | 12 |
| 2018 | 14 | 15 |
| 2019 | 11 | 10 |
| 2020 | 7 | 18 |
| 2021 | 11 | 17 |
| 2022 | 13 | 19 |
| 2023 | 10 | 30 |
| 2024 | 18 | 35 |
| 2025 | 11 | 33 |
| 2026 | 9 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System for effluent stream abatement via pyrolytic emission looping8 Sep 2026US 12,729,114 B2Lyten, Inc.
- 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
- Process for hydroformylation with removal of dissolved hydrogen28 Apr 2026US 12,612,351 B2Johnson Matthey Davy Technologies Limited
- 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
- Biogas feed for carbon monoxide production27 Aug 2026US 2026/0250588 A1Topsoe A/S
- Plant and process for producing hydrogen from hydrocarbons20 Aug 2026US 2026/0242219 A1Technip Energies France
- Production and/or regasification of bio-lng20 Aug 2026US 2026/0242672 A1Iogen Corporation
Most cited
By later US patents
- Methanol plant retrofit for acetic acid manufacture208US 6,232,352 B1Acetex limited · 2001
- Reactor-membrane permeator process for hydrocarbon reforming and water gas-shift reactions135US 6,090,312 A2000
- Apparatus for providing a pure hydrogen stream for use with fuel cells117US 6,190,623 B1Uop LLC · 2001
- Process for recovering hydrogen from a multi-component gas stream113US 4,654,063 AAir Products and Chemicals, Inc. · 1987
- Method of producing hydrogen from heavy crude oil using solvent deasphalting and partial oxidation methods92US 5,958,365 AAtlantic Richfield Company · 1999