G01N 33/0037
Nox
Official title: {NOx}
G01N33/0037 (Nox) appears on 612 US grants and 739 published applications in this corpus.
Search patents in G01N- Granted patents
- 612
- Published applications
- 739
- Assignees
- 382
- Inventors
- 1,672
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 8 | 0 |
| 1997 | 5 | 0 |
| 1998 | 9 | 0 |
| 1999 | 17 | 0 |
| 2000 | 13 | 0 |
| 2001 | 10 | 4 |
| 2002 | 5 | 15 |
| 2003 | 11 | 15 |
| 2004 | 10 | 18 |
| 2005 | 6 | 12 |
| 2006 | 7 | 11 |
| 2007 | 13 | 16 |
| 2008 | 4 | 14 |
| 2009 | 7 | 21 |
| 2010 | 9 | 23 |
| 2011 | 15 | 22 |
| 2012 | 13 | 20 |
| 2013 | 15 | 13 |
| 2014 | 13 | 29 |
| 2015 | 17 | 32 |
| 2016 | 19 | 54 |
| 2017 | 34 | 55 |
| 2018 | 36 | 49 |
| 2019 | 47 | 58 |
| 2020 | 38 | 47 |
| 2021 | 45 | 59 |
| 2022 | 40 | 41 |
| 2023 | 38 | 37 |
| 2024 | 30 | 32 |
| 2025 | 29 | 25 |
| 2026 | 25 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sensor element6 Oct 2026US 12,754,161 B2NGK Insulators, Ltd.
- Detection of volatile organic compounds29 Sep 2026US 12,748,091 B2Aclima Inc.
- Gas detection system22 Sep 2026US 12,742,708 B2Sintokogio, Ltd.
- Systems and methods for managing air quality in a surgical environment25 Aug 2026US 12,718,934 B2Stryker Corporation
- Gas measurement apparatus28 Jul 2026US 12,693,215 B2Shimadzu Corporation
- Self-powered nitrogen dioxide sensing system with excellent performance17 Sep 2026US 2026/0276611 A1China University of Petroleum (East China)
- Vent-gas monitoring and regulatory compliance system for natural gas production equipment10 Sep 2026US 2026/0266788 A1Oasis Emission Consultants, Inc.
- Analysis device, program for analysis device, and analysis method27 Aug 2026US 2026/0251560 A1Horiba, Ltd.
- Upper atmospheric environmental gas measurement device for radiosonde and measurement method thereof27 Aug 2026US 2026/0251628 A1Korea Research Institute of Standard and Science
- Integrated monitoring platform with predictive analytics for natural gas production equipment6 Aug 2026US 2026/0227372 A1Oasis Emission Consultants, Inc.
Most cited
By later US patents
- System for detecting base contaminants in air504US 6,096,267 AExtraction Systems, Inc. · 2000
- Apparatus for the monitored metering of no into patients' respiratory air487US 5,531,218 AMesser Griesheim GmbH · 1996
- Device for measuring concentration of nitrogen oxide in combustion gas455US 5,034,112 ANissan Motor Co., Ltd. · 1991
- Photolysis system for fast-response NO2 measurements and method therefor433US 6,346,419 B1The United States of America as represented by the Department of Commerce · 2002
- 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