G01N 33/225
Gaseous fuels
Official title: {Gaseous fuels, e.g. natural gas}
G01N33/225 (Gaseous fuels) appears on 334 US grants and 344 published applications in this corpus.
Search patents in G01N- Granted patents
- 334
- Published applications
- 344
- Assignees
- 226
- Inventors
- 785
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 7 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 6 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 2 |
| 2002 | 6 | 3 |
| 2003 | 5 | 6 |
| 2004 | 5 | 10 |
| 2005 | 5 | 4 |
| 2006 | 5 | 5 |
| 2007 | 3 | 1 |
| 2008 | 4 | 1 |
| 2009 | 2 | 8 |
| 2010 | 3 | 4 |
| 2011 | 7 | 15 |
| 2012 | 5 | 10 |
| 2013 | 6 | 8 |
| 2014 | 10 | 25 |
| 2015 | 11 | 17 |
| 2016 | 13 | 19 |
| 2017 | 19 | 27 |
| 2018 | 18 | 26 |
| 2019 | 23 | 25 |
| 2020 | 32 | 21 |
| 2021 | 24 | 14 |
| 2022 | 16 | 28 |
| 2023 | 14 | 19 |
| 2024 | 13 | 20 |
| 2025 | 15 | 15 |
| 2026 | 8 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Predicted bias correction for drilling fluids15 Sep 2026US 12,736,516 B2Halliburton Energy Services.Inc.
- Device and method for determining the thermal conductivity of a gas, tank arrangement and vehicle28 Jul 2026US 12,693,252 B2Ast (Advanced Sensor Technologies) International Asset GmbH
- Fuel sensor28 Jul 2026US 12,693,253 B2Advanced Fuel Dynamics, Inc.
- Systems and methods for gas leak detection using unmanned autonomous vehicles9 Jun 2026US 12,650,356 B2Schlumberger Technology Corporation
- Systems and methods for holistic low carbon intensity fuel and ethanol production17 Feb 2026US 12,554,234 B2Marathon Petroleum Company LP
- Machine learning-based fuel gas component analysis method and system and device24 Sep 2026US 2026/0287571 A1Harbin Institute of Technology
- In-line solids deposition sensor6 Aug 2026US 2026/0227352 A1The University of Western Australia
- Methodology to generate decoupled real fuel surrogates for 3-dimensional spray and combustion modeling in engine applications30 Jul 2026US 2026/0219246 A1Aramco Services Company
- Analyzing carbon isotopes of methane produced by microorganisms after exogenous carbon addition to geologic formations9 Jul 2026US 2026/0194428 A1Transworld Technologies Inc.
- Portable testing system for rapid fuel purity9 Jul 2026US 2026/0194510 A1GM Global Technology Operations LLC
Most cited
By later US patents
- On-line combustionless measurement of gaseous fuels fed to gas consumption devices123US 5,311,447 A1994
- Gas tracer composition and method99US 4,690,689 AColumbia Gas System Service Corporation · 1987
- Method for remote detection of volatile taggant97US 6,025,200 ATracer Detection Technology Corp. · 2000
- Selective leak-detector for natural gas52US 4,507,558 AHoneywell Inc. · 1985
- Multiple gas property sensor46US 5,235,844 ANiagara Mohawk Power Corporation · 1993