C01B 3/52
By contacting with liquids
Official title: by contacting with liquids; Regeneration of used liquids
C01B3/52 (By contacting with liquids) appears on 412 US grants and 462 published applications in this corpus.
Search patents in C01B- Granted patents
- 412
- Published applications
- 462
- Assignees
- 237
- Inventors
- 1,014
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 6 | 0 |
| 1980 | 7 | 0 |
| 1981 | 1 | 0 |
| 1982 | 7 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 8 | 0 |
| 1988 | 7 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 8 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 7 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 6 |
| 2003 | 5 | 4 |
| 2004 | 4 | 9 |
| 2005 | 3 | 11 |
| 2006 | 5 | 7 |
| 2007 | 4 | 12 |
| 2008 | 4 | 10 |
| 2009 | 4 | 22 |
| 2010 | 10 | 35 |
| 2011 | 15 | 34 |
| 2012 | 15 | 29 |
| 2013 | 26 | 16 |
| 2014 | 21 | 19 |
| 2015 | 22 | 17 |
| 2016 | 11 | 23 |
| 2017 | 16 | 12 |
| 2018 | 21 | 22 |
| 2019 | 19 | 20 |
| 2020 | 10 | 22 |
| 2021 | 15 | 16 |
| 2022 | 13 | 17 |
| 2023 | 20 | 27 |
| 2024 | 21 | 36 |
| 2025 | 15 | 25 |
| 2026 | 11 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Purge gas conditioning of NH3 plants15 Sep 2026US 12,735,325 B2Stamicarbon B. V.
- Maximizing syngas carbon utilization and conversion to biofuel28 Jul 2026US 12,692,155 B2Enerkem, Inc.
- Separating carbon dioxide and hydrogen from a multicomponent gaseous stream7 Jul 2026US 12,674,107 B2Saudi Arabian Oil Company
- Gas reformer for producing hydrogen16 Jun 2026US 12,655,020 B2Fluor Technologies Corporation
- Method and device for washing and purification with low-temperature methanol16 Jun 2026US 12,655,022 B2Dalian Jiachun Gas Purification Technology Development Co., Ltd
- Carbon neutral hydrogen production24 Sep 2026US 2026/0285681 A1Saudi Arabian Oil Company
- Nano particle deposition system and related methods10 Sep 2026US 2026/0265063 A1Bright Sand Industries, Inc.
- System for generation of blue hydrogen through natural gas reforming, carbon dioxide capture, carbon resource utilization, and reaction product storage, and method therefor3 Sep 2026US 2026/0257913 A1Lowcarbon Co., Ltd.
- Integrated scrubbing operations for processing of syngas from gasification30 Jul 2026US 2026/0218074 A1SunGas Renewables, Inc.
- Carbon dioxide capture and carbon resource utilization system for fuel cell and method using same2 Jul 2026US 2026/0184563 A1Lowcarbon Co., Ltd.
Most cited
By later US patents
- Production of hydrogen and carbon monoxide106US 4,861,351 AAir Products and Chemicals, Inc. · 1989
- Hydrogen production method and facility101US 7,985,399 B2Praxair Technology, Inc. · 2011
- Absorption process without external solvent97US 5,462,583 AAdvanced Extraction Technologies, Inc. · 1995
- Production of purified synthesis gas H.sub.2 -rich gas, and by-product CO.sub.2 -rich gas87US 4,052,176 ATexaco Inc. · 1977
- Method for preparing a H2-rich gas and a CO2-rich gas at high pressure85US 6,899,859 B1Den Norske Stats Oljeselskap A.S. · 2005