F25J 2220/66
Separating acid gases
Official title: Separating acid gases, e.g. CO2, SO2, H2S or RSH
F25J2220/66 (Separating acid gases) appears on 262 US grants and 327 published applications in this corpus.
Search patents in F25J- Granted patents
- 262
- Published applications
- 327
- Assignees
- 131
- Inventors
- 552
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 8 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 0 |
| 2002 | 2 | 5 |
| 2003 | 2 | 3 |
| 2004 | 4 | 13 |
| 2005 | 5 | 0 |
| 2006 | 5 | 12 |
| 2007 | 5 | 6 |
| 2008 | 3 | 7 |
| 2009 | 7 | 11 |
| 2010 | 4 | 18 |
| 2011 | 0 | 13 |
| 2012 | 1 | 13 |
| 2013 | 4 | 13 |
| 2014 | 2 | 9 |
| 2015 | 5 | 20 |
| 2016 | 6 | 14 |
| 2017 | 15 | 40 |
| 2018 | 16 | 23 |
| 2019 | 21 | 13 |
| 2020 | 16 | 19 |
| 2021 | 15 | 14 |
| 2022 | 16 | 25 |
| 2023 | 4 | 13 |
| 2024 | 16 | 10 |
| 2025 | 6 | 11 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Liquefied natural gas production facility on gravity-based structures16 Jun 2026US 12,656,058 B2Publichnoe Aktsionernoe Obshchestvo "NOVATEK"
- Apparatus and systems for liquefaction of natural gas2 Jun 2026US 12,644,643 B2Steelhead Lng (Aslng) Ltd.
- System and method for efficient natural gas pretreatment13 Jan 2026US 12,523,422 B2CNX Resources Corporation
- Carbon dioxide recycle stream processing with ethylene glycol dehydrating in an enhanced oil recovery process18 Nov 2025US 12,474,115 B2Pilot Intellectual Property, LLC
- Component separations2 Sep 2025US 12,405,055 B2Sustainable Energy Solutions, LLC
- Process for dehydration of a gas stream prior to cryogenic co2 fractionation7 May 2026US 2026/0126246 A1Uop LLC
- Methods and systems for natural gas purification integrated with gas compression16 Apr 2026US 2026/0104199 A1Valence Natural Gas Solutions LLC
- Ethane recovery system suitable for rich gas with high carbon dioxide content and recovery method therefor23 Oct 2025US 2025/0327618 A1Jiangsu Urban and Rural Construction Vocational College
- Integrated liquefied natural gas (lng) production facility on a gravity-based structure (gbs)17 Jul 2025US 2025/0230975 A1Publichnoe Aktsionernoe Obshchestvo "NOVATEK"
- Liquefied natural gas production facility on gravity-based structures19 Jun 2025US 2025/0198696 A1Publichnoe Aktsionernoe Obshchestvo "NOVATEK"
Most cited
By later US patents
- Distillative separations of gas mixtures containing methane, carbon dioxide and other components129US 4,462,814 AKoch Process Systems, Inc. · 1984
- Integrated process for converting hydrocarbon gas to liquids124US 6,248,794 B1Atlantic Richfield Company · 2001
- Hydrocarbon gas processing122US 6,182,469 B2Elcor Corporation · 2001
- Cryogenic distillative separation of acid gases from methane111US 4,318,723 AKoch Process Systems, Inc. · 1982
- Membrane-aided distillation for carbon dioxide and hydrocarbon separation103US 4,602,477 AAir Products and Chemicals, Inc. · 1986