C07C 9/04
Methane
Official title: Methane (production by treatment of sewage C02F11/04; natural gas, synthetic natural gas C10L3/06)
C07C9/04 (Methane) appears on 71 US grants and 81 published applications in this corpus.
Search patents in C07C- Granted patents
- 71
- Published applications
- 81
- Assignees
- 91
- Inventors
- 287
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 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 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 2 | 2 |
| 2015 | 2 | 0 |
| 2016 | 0 | 3 |
| 2017 | 4 | 4 |
| 2018 | 3 | 15 |
| 2019 | 7 | 12 |
| 2020 | 7 | 5 |
| 2021 | 8 | 11 |
| 2022 | 7 | 1 |
| 2023 | 2 | 7 |
| 2024 | 5 | 7 |
| 2025 | 3 | 4 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydrocarbon production system, and production method and operation method thereof19 May 2026US 12,630,488 B2Osaka Gas Co., Ltd.
- Gas separation system and method for producing methane-enriched gas12 May 2026US 12,623,983 B2Ube Corporation
- Methanation reaction device using endothermic reaction for removal of reaction heat and regeneration process for heat-absorbing material21 Apr 2026US 12,605,687 B2
- Biogas production system using organic waste21 Apr 2026US 12,606,476 B2DHM Global Inc.
- Method for producing fuel gas9 Dec 2025US 12,492,154 B2Osaka Gas Co., Ltd.
- Catalyst for methane reforming and manufacturing method thereof1 Oct 2026US 2026/0295566 A1Hanwha Solutions Corporation
- Reactor for synthesis of methane and / or methanol from reactants and method for synthesis of methane from reactants27 Aug 2026US 2026/0250217 A1Turn2X GmbH
- Gas treatment method and gas treatment device13 Aug 2026US 2026/0233154 A1Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
- Hydrocarbon production system and hydrocarbon production method23 Jul 2026US 2026/0209141 A1Mitsubishi Heavy Industries, Ltd.
- Dehydrogenation reaction catalyst26 Feb 2026US 2026/0054254 A1Niterra Co., Ltd.
Most cited
By later US patents
- Production of substitute natural gas289US 4,133,825 ABritish Gas Corporation · 1979
- Hydropyrolysis process133US 4,597,776 ARockwell International Corporation · 1986
- Method for production of gas hydrates for transportation and storage103US 5,536,893 A1996
- Landfill gas recovery94US 5,842,357 AAcrion Technologies, Inc. · 1998
- Landfill gas recovery81US 5,681,360 AAcrion Technologies, Inc. · 1997