G01N 33/0026
Using an alternating circulation of another gas
Official title: {using an alternating circulation of another gas}
G01N33/0026 (Using an alternating circulation of another gas) appears on 91 US grants and 49 published applications in this corpus.
Search patents in G01N- Granted patents
- 91
- Published applications
- 49
- Assignees
- 77
- Inventors
- 232
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 1 |
| 2003 | 0 | 4 |
| 2004 | 1 | 2 |
| 2005 | 1 | 0 |
| 2006 | 2 | 1 |
| 2007 | 1 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 3 |
| 2013 | 1 | 1 |
| 2014 | 1 | 3 |
| 2015 | 3 | 1 |
| 2016 | 1 | 4 |
| 2017 | 2 | 1 |
| 2018 | 1 | 2 |
| 2019 | 4 | 5 |
| 2020 | 2 | 0 |
| 2021 | 3 | 6 |
| 2022 | 1 | 3 |
| 2023 | 3 | 3 |
| 2024 | 2 | 4 |
| 2025 | 3 | 0 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Prediction of research octane number using a constant volume combustion chamber1 Sep 2026US 12,724,015 B2Precision Analyzer Company L.P.
- Methods and systems for limiting water within a photoionization detector18 Aug 2026US 12,710,410 B2Honeywell International Inc.
- Compact dehydration and trap module5 May 2026US 12,618,817 B2Thermo Fisher Scientific (Shanghai) Instruments Co., Ltd.
- Micro-environment apparatus and method for air sensor9 Sep 2025US 12,411,118 B2Grand Valley State University
- Gas detection device with self protection functionality1 Jul 2025US 12,345,617 B2Welmade Technology Corporation
- Device and method for monitoring gas8 Oct 2026US 2026/0309687 A1Piovan S.P.A.
- Electronic nose for rapid detection23 Jul 2026US 2026/0210922 A1Ainos, Inc.
- Sniffing leak-detection device with a semiconductor gas sensor and method for sniffing leak detection15 Jan 2026US 2026/0016360 A1Inficon GmbH
- Prediction of research octane number using a constant volume combustion chamber25 Apr 2024US 2024/0133853 A1Petroleum Analyzer Company, LP
- Sniffing leak detector with switching valve and buffer chamber18 Apr 2024US 2024/0125667 A1Inficon GmbH
Most cited
By later US patents
- System to be used for the determination of no levels in exhaled air and diagnostic methods for disorders related to abnormal no levels84US 5,922,610 AAerocrine AB · 1999
- In-line detector system for real-time determination of impurity concentration in a flowing gas stream58US 5,325,705 ANovapure Corporation · 1994
- Differential gas sensing in-line monitoring system37US 5,583,282 AMillipore Investment Holdings Limited · 1996
- In-line detector system for real-time determination of impurity concentration in a flowing gas stream33US 5,138,869 ANovapure Corporation · 1992
- Process and device for measuring isotope ratios28US 5,146,294 AFraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V. · 1992