G01N 2223/638
Gas
Official title: gas
G01N2223/638 (Gas) appears on 20 US grants and 21 published applications in this corpus.
Search patents in G01N- Granted patents
- 20
- Published applications
- 21
- Assignees
- 22
- Inventors
- 66
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 2 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 2 |
| 2017 | 0 | 3 |
| 2018 | 3 | 1 |
| 2019 | 2 | 1 |
| 2020 | 2 | 3 |
| 2021 | 0 | 0 |
| 2022 | 2 | 1 |
| 2023 | 0 | 3 |
| 2024 | 1 | 2 |
| 2025 | 3 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Integrated process and system for measurement and treatment of toxic gases in deep natural gas28 Jul 2026US 12,692,452 B2PetroChina Company Limited
- Simulation device for electron-excited atmospheric radiation23 Dec 2025US 12,505,760 B2Hefei Institutes of Physical Science, CAS
- Optical device11 Mar 2025US 12,247,915 B2Asahi Kasei Microdevices Corporation
- Carbon-based optical sensor element for measuring greenhouse gas concentration25 Feb 2025US 12,235,230 B2National Institute of Meteorological Sciences
- Optical device5 Mar 2024US 11,921,038 B2Asahi Kasei Microdevices Corporation
- Method and Apparatus for Capturing Iodine Vapor28 Aug 2025US 2025/0271371 A1Palladias LLC
- Sensor element for an optochemical sensor27 Jun 2024US 2024/0210368 A1Endress+Hauser Conducta GmbH+Co. KG
- Optical device16 May 2024US 2024/0159662 A1Asahi Kasei Microdevices Corporation
- Integrated process and system for measurement and treatment of toxic gases in deep natural gas21 Dec 2023US 2023/0407199 A1PetroChina Company Limited
- Simulation device for electron-excited atmospheric radiation7 Dec 2023US 2023/0394990 A1Hefei Institutes of Physical Science, CAS
Most cited
By later US patents
- Sand detector41US 5,250,807 ANorsk Hydro A/S · 1993
- Method and apparatus for detecting trace contaminents8US 5,023,452 AHughes Aircraft Company · 1991
- Method for characterizing flame and spray structures in windowless chambers3US 9,459,216 B2En'Urga, Inc. · 2016
- Neutron activation analysis method and apparatus for determining sodium and sodium compounds in liquid samples2US 4,293,379 AThe Dow Chemical Company · 1981
- Continuous, real time monitor for airborne depleted uranium particles in the respiratory range and corresponding method of use1US 10,031,060 B2Mauro & Associates, LLC · 2018