B01D 2257/7025
Methane
B01D2257/7025 (Methane) appears on 417 US grants and 522 published applications in this corpus.
Search patents in B01D- Granted patents
- 417
- Published applications
- 522
- Assignees
- 328
- Inventors
- 1,392
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 6 | 0 |
| 1988 | 10 | 0 |
| 1989 | 4 | 0 |
| 1990 | 7 | 0 |
| 1991 | 6 | 0 |
| 1992 | 10 | 0 |
| 1993 | 6 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 6 | 0 |
| 2002 | 2 | 1 |
| 2003 | 3 | 3 |
| 2004 | 3 | 1 |
| 2005 | 1 | 6 |
| 2006 | 3 | 3 |
| 2007 | 1 | 5 |
| 2008 | 2 | 0 |
| 2009 | 3 | 6 |
| 2010 | 3 | 1 |
| 2011 | 0 | 8 |
| 2012 | 4 | 16 |
| 2013 | 9 | 16 |
| 2014 | 9 | 18 |
| 2015 | 12 | 27 |
| 2016 | 15 | 21 |
| 2017 | 17 | 35 |
| 2018 | 20 | 36 |
| 2019 | 24 | 26 |
| 2020 | 28 | 33 |
| 2021 | 16 | 28 |
| 2022 | 25 | 48 |
| 2023 | 29 | 44 |
| 2024 | 37 | 48 |
| 2025 | 29 | 44 |
| 2026 | 29 | 48 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Analysis device and analysis method for quality index of natural gas product and application6 Oct 2026US 12,754,171 B2PetroChina Company Limited
- Air conditioning and filtration system29 Sep 2026US 12,746,502 B2Work Air Technologies Pty Ltd
- Photochemical method and device for volatile organic compound pollution control22 Sep 2026US 12,741,248 B2Ambient Carbon Methane Holding Aps
- Analysis system and method for impurity components in perfluoropropane22 Sep 2026US 12,742,752 B2Lansis Instrument (Shanghai) Co., Ltd
- Membrane permeate recycle with pressurized anaerobic digesters15 Sep 2026US 12,734,475 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Complete oxidation catalysts for dilute alkanes1 Oct 2026US 2026/0295521 A1Icarus Technology LLC
- Air contactor24 Sep 2026US 2026/0284592 A1
- Adsorbent Material, Adsorption System, and Adsorption Process For Hydrogen Recovery17 Sep 2026US 2026/0274664 A1Air Products and Chemicals, Inc.
- Gas separation system and enriched gas production method3 Sep 2026US 2026/0257167 A1Ube Corporation
- Pressure swing adsorption facility27 Aug 2026US 2026/0249231 A1Institute for Advanced Engineering
Most cited
By later US patents
- Selective adsorption process139US 3,986,849 AUnion Carbide Corporation · 1976
- Process for separating components of a gas stream137US 4,701,187 AAir Products and Chemicals, Inc. · 1987
- Extraction and concentration of a gas component117US 5,082,473 A1992
- Hydrogen purification by selective adsorption111US 4,077,779 AAir Products and Chemicals, Inc. · 1978
- PSA multicomponent separation utilizing tank equalization101US 4,816,039 AThe BOC Group, Inc. · 1989