F25J 2210/66
Landfill or fermentation off-gas
Official title: Landfill or fermentation off-gas, e.g. "Bio-gas"
F25J2210/66 (Landfill or fermentation off-gas) appears on 52 US grants and 79 published applications in this corpus.
Search patents in F25J- Granted patents
- 52
- Published applications
- 79
- Assignees
- 39
- Inventors
- 129
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 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 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 2 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 3 |
| 2011 | 1 | 1 |
| 2012 | 0 | 3 |
| 2013 | 1 | 3 |
| 2014 | 2 | 1 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 4 |
| 2018 | 2 | 1 |
| 2019 | 6 | 2 |
| 2020 | 1 | 3 |
| 2021 | 3 | 7 |
| 2022 | 3 | 13 |
| 2023 | 2 | 9 |
| 2024 | 6 | 8 |
| 2025 | 9 | 12 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Facility and method for producing biomethane with limited methane loss and limited CO2 emissions30 Jun 2026US 12,667,805 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Carbon dioxide capture apparatus and process combined with biogas upgrading10 Mar 2026US 12,569,801 B2Airrane Co., Ltd.
- Device and method for refrigerating or liquefying a fluid28 Oct 2025US 12,455,113 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Systems and methods of renewable natural gas processing2 Sep 2025US 12,403,423 B2Alchemy CO2, PBC
- Systems and methods of renewable natural gas processing26 Aug 2025US 12,397,260 B2Alchemy CO2, PBC
- Production and/or regasification of bio-lng20 Aug 2026US 2026/0242672 A1Iogen Corporation
- Systems and methods of renewable natural gas processing22 Jan 2026US 2026/0021444 A1
- Carbon dioxide capture apparatus and process combined with biogas upgrading13 Nov 2025US 2025/0345742 A1Airrane Co., Ltd.
- Systems and methods of renewable natural gas processing13 Nov 2025US 2025/0345743 A1
- System and method for online gas analytical pressure-swing adsorption (psa) control for landfill or biogas separation17 Jul 2025US 2025/0230976 A1Wm Intellectual Property Holdings, L.L.C.
Most cited
By later US patents
- Process for the separation of landfill gas115US 4,681,612 AKoch Process Systems, Inc. · 1987
- Process for solids waste landfill gas treatment and separation of methane and carbon dioxide95US 5,642,630 A1997
- Landfill gas recovery94US 5,842,357 AAcrion Technologies, Inc. · 1998
- Landfill gas recovery81US 5,681,360 AAcrion Technologies, Inc. · 1997
- Apparatus and method for purifying natural gas via cryogenic separation63US 6,082,133 ACryo Fuel Systems, Inc · 2000