B01D 2256/245
Methane
B01D2256/245 (Methane) appears on 965 US grants and 1,319 published applications in this corpus.
Search patents in B01D- Granted patents
- 965
- Published applications
- 1,319
- Assignees
- 468
- Inventors
- 2,383
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 2 |
| 2003 | 2 | 1 |
| 2004 | 0 | 3 |
| 2005 | 0 | 2 |
| 2006 | 3 | 7 |
| 2007 | 3 | 4 |
| 2008 | 5 | 2 |
| 2009 | 4 | 3 |
| 2010 | 0 | 4 |
| 2011 | 1 | 14 |
| 2012 | 8 | 36 |
| 2013 | 21 | 36 |
| 2014 | 31 | 65 |
| 2015 | 36 | 61 |
| 2016 | 45 | 120 |
| 2017 | 69 | 97 |
| 2018 | 82 | 121 |
| 2019 | 89 | 101 |
| 2020 | 89 | 106 |
| 2021 | 72 | 112 |
| 2022 | 91 | 95 |
| 2023 | 77 | 95 |
| 2024 | 91 | 97 |
| 2025 | 77 | 77 |
| 2026 | 36 | 58 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Gas separation system and method for producing methane-enriched gas15 Sep 2026US 12,734,474 B2Ube Corporation
- System and method for separating a gas mixture25 Aug 2026US 12,714,968 B2Haffmans B.V.
- Gas separation membrane, and preparation method therefor and use thereof25 Aug 2026US 12,714,972 B2Changshu 3F Zhonghao New Chemical Materials Co., Ltd.
- Stable qualified clean hydrogen production process and system11 Aug 2026US 12,703,629 B2Black & Veatch Corporation
- Process for treating a gas stream from plastic pyrolisis and/or biomass pyrolisis, and installation for integration into a steam cracker11 Aug 2026US 12,703,671 B2Technip Energies France
- Method for treating a fluid, fluid discharge device for a fluid and associated system8 Oct 2026US 2026/0306992 A1
- Gas separation method, method for producing purified gas, and gas separation apparatus8 Oct 2026US 2026/0306996 A1Asahi Kasei Kabushiki Kaisha
- Integration of fuel cell system and co2 capture unit for hydrogen production8 Oct 2026US 2026/0312105 A1Uop LLC
- Co2 separation system1 Oct 2026US 2026/0298533 A1National Institute for Materials Science National Institute for Materials Science
- Mixed-matrix metal-organic framework membranes for molecular separations27 Aug 2026US 2026/0249253 A1King Abdullah University of Science and Technology
Most cited
By later US patents
- Process for separating components of a gas stream137US 4,701,187 AAir Products and Chemicals, Inc. · 1987
- Process for the purification of natural gas100US 5,174,796 AUop LLC · 1992
- Adsorption process for continuous purification of high value gas feeds84US 7,166,149 B2Uop LLC · 2007
- Indexing rotary dual valve for pressure swing adsorption systems70US 7,276,107 B2Praxair Technology, Inc. · 2007
- Rapid pressure swing adsorption process with high enrichment factor65US 4,194,892 AUnion Carbide Corporation · 1980