G01N 21/37
Using pneumatic detection
Official title: using pneumatic detection {(opto-acoustic detection G01N21/1702)}
G01N21/37 (Using pneumatic detection) appears on 95 US grants and 27 published applications in this corpus.
Search patents in G01N- Granted patents
- 95
- Published applications
- 27
- Assignees
- 53
- Inventors
- 166
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 9 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 6 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 3 |
| 2008 | 1 | 2 |
| 2009 | 0 | 0 |
| 2010 | 2 | 1 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 2 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 3 | 4 |
| 2018 | 1 | 3 |
| 2019 | 3 | 3 |
| 2020 | 0 | 3 |
| 2021 | 4 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Nitrous oxide sensor10 Feb 2026US 12,546,713 B2Medclair Sweden AB
- Assembly and method for measuring a substance concentration in a gaseous medium by means of absorption spectroscopy22 Mar 2022US 11,280,726 B2Sensatronic GmbH
- Photoacoustic gas sensors and method of operating a photoacoustic gas sensor26 Oct 2021US 11,156,547 B2Infineon Technologies AG
- Small form factor spectrally selective absorber with high acceptance angle for use in gas detection14 Sep 2021US 11,119,037 B2Honeywell International Inc.
- Sensor wiring substrate, sensor package, and sensor device31 Aug 2021US 11,105,738 B2KYOCERA Corporation
- Improved noise canceling detector25 Jun 2026US 2026/0177479 A1Tunable AS
- Nitrous oxide sensor16 May 2024US 2024/0159664 A1Medclair AB
- Small form factor spectrally selective absorber with high acceptance angle for use in gas detection22 Oct 2020US 2020/0333244 A1Honeywell International Inc.
- Gas analyzer and gas analyzing method16 Jul 2020US 2020/0225150 A1Hubei Cubic-Ruiyi Instrument Co., Ltd
- Assembly and Method for Measuring a Substance Concentration in a Gaseous Medium by Means of Absorption Spectroscopy30 Jan 2020US 2020/0033257 A1Sensatronic GmbH
Most cited
By later US patents
- Pressure sensor67US 4,628,740 AYokogawa Hokushin Electric Corporation · 1986
- Detection means for the selective detection of gases, based on optical spectroscopy53US 4,557,603 A1985
- Apparatus for determining the .sup.13 CO.sub.2 /.sup.12 CO.sub.2 ratio of concentrations in a gas sample45US 5,479,019 AMIC Medical Instrument Corporation · 1995
- Micromachined integrated opto-flow gas/liquid sensor36US 5,869,749 AHoneywell Inc. · 1999
- Micromachined integrated opto-flow gas/liquid sensor36US 5,886,249 AHoneywell Inc. · 1999