G01N 27/4074
For detection of gases other than oxygen
Official title: {for detection of gases other than oxygen}
G01N27/4074 (For detection of gases other than oxygen) appears on 474 US grants and 425 published applications in this corpus.
Search patents in G01N- Granted patents
- 474
- Published applications
- 425
- Assignees
- 222
- Inventors
- 944
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 6 | 0 |
| 1988 | 3 | 0 |
| 1989 | 8 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 9 | 0 |
| 1996 | 10 | 0 |
| 1997 | 11 | 0 |
| 1998 | 10 | 0 |
| 1999 | 21 | 0 |
| 2000 | 13 | 0 |
| 2001 | 24 | 5 |
| 2002 | 14 | 14 |
| 2003 | 10 | 28 |
| 2004 | 11 | 16 |
| 2005 | 9 | 14 |
| 2006 | 6 | 11 |
| 2007 | 13 | 14 |
| 2008 | 8 | 8 |
| 2009 | 6 | 12 |
| 2010 | 8 | 13 |
| 2011 | 8 | 16 |
| 2012 | 10 | 12 |
| 2013 | 11 | 13 |
| 2014 | 10 | 6 |
| 2015 | 6 | 16 |
| 2016 | 7 | 29 |
| 2017 | 13 | 40 |
| 2018 | 18 | 50 |
| 2019 | 29 | 19 |
| 2020 | 42 | 25 |
| 2021 | 18 | 14 |
| 2022 | 15 | 11 |
| 2023 | 13 | 15 |
| 2024 | 9 | 9 |
| 2025 | 8 | 6 |
| 2026 | 11 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Gas concentration measuring device and manufacturing method for the same16 Jun 2026US 12,656,308 B2Denso Corporation
- Carbon dioxide sensor19 May 2026US 12,631,588 B2Kyushu University, National University Corporation
- CO2 mass estimation system, exhaust gas composition ratio estimation method, and CO2 mass estimation method12 May 2026US 12,625,107 B2NGK Insulators, Ltd.
- Gas sensor and control method of gas sensor7 Apr 2026US 12,596,092 B2NGK Insulators, Ltd.
- Gas sensor and concentration correction method for use in gas sensor31 Mar 2026US 12,590,922 B2NGK Insulators, Ltd.
- Co2 mass estimation system, exhaust gas composition ratio estimation method, and co2 mass estimation method17 Sep 2026US 2026/0276581 A1NGK Insulators, Ltd.
- Gas sensor18 Jun 2026US 2026/0168956 A1NGK Insulators, Ltd.
- Proton Conductor Gas Sensor30 Apr 2026US 2026/0118309 A1Figaro Engineering Inc.
- Gas sensor23 Apr 2026US 2026/0110659 A1NGK Insulators, Ltd.
- Gas sensor23 Apr 2026US 2026/0110661 A1NGK Insulators, Ltd.
Most cited
By later US patents
- Device for measuring concentration of nitrogen oxide in combustion gas455US 5,034,112 ANissan Motor Co., Ltd. · 1991
- Potential and diffusion controlled solid electrolyte sensor for continuous measurement of very low levels of transdermal alcohol437US 5,944,661 AGiner, Inc. · 1999
- Method for determining a NOx concentration281US 6,699,383 B2Siemens Aktiengesellschaft · 2004
- Ion conductor material193US 4,419,421 AMax-Planck-Gesellschaft Zur FöRderung Der Wissenschaften E. V. · 1983
- Fuel cell generator and method of the same98US 5,712,052 AToyota Jidosha Kabushiki Kaisha · 1998