F25J 3/0209
Natural gas or substitute natural gas
Official title: {Natural gas or substitute natural gas}
F25J3/0209 (Natural gas or substitute natural gas) appears on 877 US grants and 860 published applications in this corpus.
Search patents in F25J- Granted patents
- 877
- Published applications
- 860
- Assignees
- 253
- Inventors
- 1,176
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 7 | 0 |
| 1978 | 9 | 0 |
| 1979 | 11 | 0 |
| 1980 | 8 | 0 |
| 1981 | 13 | 0 |
| 1982 | 9 | 0 |
| 1983 | 6 | 0 |
| 1984 | 19 | 0 |
| 1985 | 19 | 0 |
| 1986 | 15 | 0 |
| 1987 | 25 | 0 |
| 1988 | 18 | 0 |
| 1989 | 11 | 0 |
| 1990 | 11 | 0 |
| 1991 | 8 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 11 | 0 |
| 1995 | 7 | 0 |
| 1996 | 14 | 0 |
| 1997 | 17 | 0 |
| 1998 | 14 | 0 |
| 1999 | 16 | 0 |
| 2000 | 13 | 0 |
| 2001 | 19 | 2 |
| 2002 | 14 | 14 |
| 2003 | 17 | 14 |
| 2004 | 12 | 25 |
| 2005 | 13 | 26 |
| 2006 | 16 | 29 |
| 2007 | 22 | 19 |
| 2008 | 16 | 40 |
| 2009 | 17 | 36 |
| 2010 | 9 | 46 |
| 2011 | 8 | 36 |
| 2012 | 9 | 41 |
| 2013 | 20 | 31 |
| 2014 | 16 | 34 |
| 2015 | 26 | 54 |
| 2016 | 22 | 33 |
| 2017 | 43 | 55 |
| 2018 | 45 | 45 |
| 2019 | 46 | 58 |
| 2020 | 36 | 45 |
| 2021 | 30 | 46 |
| 2022 | 37 | 35 |
| 2023 | 28 | 29 |
| 2024 | 27 | 28 |
| 2025 | 24 | 21 |
| 2026 | 11 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method and system for producing a liquefied natural gas product18 Aug 2026US 12,710,225 B2Linde Aktiengesellschaft
- Apparatus and process for removal of heavy hydrocarbons from a feed gas11 Aug 2026US 12,703,831 B2Honeywell Lng LLC
- System for purifying helium gas, method, and application28 Jul 2026US 12,693,071 B2Changqing Engineering Design Co., Ltd.
- Distillation column minimum flow arrangement14 Jul 2026US 12,678,708 B2Saudi Arabian Oil Company
- Standalone high-pressure heavies removal unit for LNG processing26 May 2026US 12,638,236 B2ConocoPhillips Company
- Cryogenic process for helium recovery from low helium-containing gas stream24 Sep 2026US 2026/0287252 A1Council of Scientific and Industrial Research
- Single Column Nitrogen Rejection Unit20 Aug 2026US 2026/0243507 A1Chart Energy & Chemicals, Inc.
- Method for separating nitrogen from lng13 Aug 2026US 2026/0235353 A1Linde Aktiengesellschaft
- Configurations and methods for ngl recovery for high nitrogen content feed gases13 Aug 2026US 2026/0235354 A1Fluor Technologies Corporation
- Pumpless Heavy Hydrocarbon Removal with Compressor Discharge Reflux System and Method28 May 2026US 2026/0146206 A1
Most cited
By later US patents
- Carbon dioxide recovery156US 4,762,543 AAmoco Corporation · 1988
- Process for liquefaction of natural gas137US 6,023,942 AExxon Production Research Company · 2000
- Hydrocarbon gas processing136US 4,140,504 AThe Ortloff Corporation · 1979
- Hydrocarbon gas processing134US 5,568,737 AElcor Corporation · 1996
- Distillative separations of gas mixtures containing methane, carbon dioxide and other components129US 4,462,814 AKoch Process Systems, Inc. · 1984