G01N 27/407
For investigating or analysing gases
Official title: for investigating or analysing gases {(G01N27/411 takes precedence)}
G01N27/407 (For investigating or analysing gases) appears on 2,442 US grants and 2,124 published applications in this corpus.
Search patents in G01N- Granted patents
- 2,442
- Published applications
- 2,124
- Assignees
- 622
- Inventors
- 3,600
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 14 | 0 |
| 1978 | 30 | 0 |
| 1979 | 25 | 0 |
| 1980 | 36 | 0 |
| 1981 | 47 | 0 |
| 1982 | 39 | 0 |
| 1983 | 30 | 0 |
| 1984 | 23 | 0 |
| 1985 | 22 | 0 |
| 1986 | 23 | 0 |
| 1987 | 28 | 0 |
| 1988 | 30 | 0 |
| 1989 | 45 | 0 |
| 1990 | 35 | 0 |
| 1991 | 26 | 0 |
| 1992 | 28 | 0 |
| 1993 | 19 | 0 |
| 1994 | 28 | 0 |
| 1995 | 34 | 0 |
| 1996 | 36 | 0 |
| 1997 | 33 | 0 |
| 1998 | 53 | 0 |
| 1999 | 51 | 0 |
| 2000 | 51 | 0 |
| 2001 | 75 | 26 |
| 2002 | 73 | 86 |
| 2003 | 63 | 84 |
| 2004 | 61 | 80 |
| 2005 | 38 | 78 |
| 2006 | 26 | 64 |
| 2007 | 43 | 88 |
| 2008 | 40 | 60 |
| 2009 | 39 | 75 |
| 2010 | 32 | 58 |
| 2011 | 46 | 62 |
| 2012 | 45 | 48 |
| 2013 | 48 | 61 |
| 2014 | 58 | 72 |
| 2015 | 40 | 101 |
| 2016 | 74 | 116 |
| 2017 | 76 | 129 |
| 2018 | 88 | 144 |
| 2019 | 114 | 123 |
| 2020 | 125 | 139 |
| 2021 | 92 | 114 |
| 2022 | 83 | 90 |
| 2023 | 77 | 77 |
| 2024 | 61 | 64 |
| 2025 | 69 | 55 |
| 2026 | 57 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01N 27/4073Composition or fabrication of the solid electrolyte732
- G01N 27/4071Using sensor elements of laminated structure633
- G01N 27/4075Composition or fabrication of the electrodes and coatings thereon554
- G01N 27/4077Means for protecting the electrolyte or the electrodes532
- G01N 27/4078Means for sealing the sensor element in a housing224
- G01N 27/409Oxygen concentration cells217
- G01N 27/41Oxygen pumping cells197
Recent patents
- Sensor element6 Oct 2026US 12,754,161 B2NGK Insulators, Ltd.
- Gas sensor29 Sep 2026US 12,748,070 B2NGK Insulators, Ltd.
- Gas sensor22 Sep 2026US 12,742,747 B2Niterra Co., Ltd.
- Rapid airborne viral sensor and methods related thereto8 Sep 2026US 12,730,087 B2Texas Tech University System
- Gas sensor and casing for containing sensor element21 Jul 2026US 12,687,515 B2NGK Insulators, Ltd.
- Sensor and device for a sensor comprising gel electrolyte24 Sep 2026US 2026/0287544 A1Mettler-Toledo AG
- Sensor With Long-Term Stability17 Sep 2026US 2026/0276579 A1Siemens Aktiengesellschaft
- Co2 mass estimation system, exhaust gas composition ratio estimation method, and co2 mass estimation method17 Sep 2026US 2026/0276581 A1NGK Insulators, Ltd.
- Sensor element, gas sensor, and sensor element manufacturing method10 Sep 2026US 2026/0266754 A1Niterra Co., Ltd.
- Gas sensor10 Sep 2026US 2026/0266758 A1FaradaIC Sensors GmbH
Most cited
By later US patents
- Device for measuring concentration of nitrogen oxide in combustion gas455US 5,034,112 ANissan Motor Co., Ltd. · 1991
- Apparatus for electrolytically determining a species in a fluid and method of use441US 4,076,596 ALeeds & Northrup Company · 1978
- Potential and diffusion controlled solid electrolyte sensor for continuous measurement of very low levels of transdermal alcohol437US 5,944,661 AGiner, Inc. · 1999
- NOx sensor301US 6,773,565 B2Riken · 2004
- Method for determining a NOx concentration281US 6,699,383 B2Siemens Aktiengesellschaft · 2004