C01B 2203/145
At least two purification steps in parallel
C01B2203/145 (At least two purification steps in parallel) appears on 67 US grants and 69 published applications in this corpus.
Search patents in C01B- Granted patents
- 67
- Published applications
- 69
- Assignees
- 61
- Inventors
- 175
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 6 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 4 | 2 |
| 2003 | 1 | 0 |
| 2004 | 0 | 8 |
| 2005 | 1 | 2 |
| 2006 | 1 | 7 |
| 2007 | 4 | 2 |
| 2008 | 2 | 2 |
| 2009 | 2 | 3 |
| 2010 | 3 | 3 |
| 2011 | 4 | 7 |
| 2012 | 3 | 1 |
| 2013 | 3 | 3 |
| 2014 | 2 | 4 |
| 2015 | 3 | 3 |
| 2016 | 2 | 3 |
| 2017 | 0 | 2 |
| 2018 | 8 | 3 |
| 2019 | 3 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 5 |
| 2023 | 3 | 3 |
| 2024 | 1 | 3 |
| 2025 | 1 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Gas reformer for producing hydrogen16 Jun 2026US 12,655,020 B2Fluor Technologies Corporation
- ATR-based hydrogen process and plant16 Jun 2026US 12,655,021 B2Haldor TopsøE A/S
- Process for producing carbon monoxide-containing streams19 Aug 2025US 12,391,548 B2Evonik Oxeno GmbH
- Process and apparatus for the separation of two gaseous streams each containing carbon monoxide, hydrogen and at least one acid gas8 Oct 2024US 12,109,527 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Gasification process12 Dec 2023US 11,840,668 B2Velocys Technologies Limited
- Decomposing a flowing feedstock13 Nov 2025US 2025/0346487 A1Ekona Power Inc.
- Hydrogen production system and method for producing hydrogen using the same19 Jun 2025US 2025/0197214 A1Hyundai Motor Company
- Process and plant for flexible production of syngas from hydrocarbons22 Aug 2024US 2024/0279058 A1Technip Energies France
- Multiple furnace carbon capture through fuel gas separation and hydrogen combustion product electrolysis4 Apr 2024US 2024/0109774 A1Chevron Phillips Chemical Company LP
- Atr-based hydrogen process and plant22 Feb 2024US 2024/0059563 A1Haldor TopsøE A/S
Most cited
By later US patents
- Fuel cell power generation system138US 5,658,681 AAisin Aw Co., Ltd. · 1997
- Apparatus for providing a pure hydrogen stream for use with fuel cells117US 6,190,623 B1Uop LLC · 2001
- Hydrogen and carbon dioxide coproduction88US 6,500,241 B2Fluor Corporation · 2002
- Hydrogasification of biomass to produce high yields of methane85US 4,822,935 A1989
- Methanol, olefin, and hydrocarbon synthesis process63US 6,444,712 B1ExxonMobil Chemical Patents Inc. · 2002