G01N 33/0042
So2 or so3
Official title: {SO2 or SO3}
G01N33/0042 (So2 or so3) appears on 131 US grants and 159 published applications in this corpus.
Search patents in G01N- Granted patents
- 131
- Published applications
- 159
- Assignees
- 131
- Inventors
- 441
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 1 |
| 2003 | 2 | 3 |
| 2004 | 2 | 4 |
| 2005 | 1 | 4 |
| 2006 | 0 | 1 |
| 2007 | 1 | 3 |
| 2008 | 2 | 1 |
| 2009 | 0 | 2 |
| 2010 | 3 | 4 |
| 2011 | 4 | 1 |
| 2012 | 3 | 8 |
| 2013 | 2 | 3 |
| 2014 | 4 | 5 |
| 2015 | 2 | 6 |
| 2016 | 2 | 14 |
| 2017 | 7 | 13 |
| 2018 | 9 | 13 |
| 2019 | 17 | 11 |
| 2020 | 11 | 15 |
| 2021 | 9 | 12 |
| 2022 | 7 | 6 |
| 2023 | 3 | 4 |
| 2024 | 4 | 9 |
| 2025 | 6 | 11 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Autonomous real-time emissions monitor for marine exhaust emissions29 Sep 2026US 12,748,020 B2
- Gas measurement apparatus28 Jul 2026US 12,693,215 B2Shimadzu Corporation
- Thiosulfate sensor9 Jun 2026US 12,650,404 B2Badger Meter, Inc.
- System for detecting and cleaning indoor air pollution2 Jun 2026US 12,644,621 B2Microjet Technology Co., Ltd.
- Method for measuring humidity2 Jun 2026US 12,644,782 B2ABB Schweiz AG
- 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
- Fecal gas time curve analysis method for bristol stool type classification26 Mar 2026US 2026/0086076 A1Hem Pharma Inc.
- Method and system for determining emission distribution of a gas using a surrogate model5 Mar 2026US 2026/0065294 A1Tata Consultancy Services Limited
- Apparatus, system, and method for odor assessment9 Oct 2025US 2025/0314564 A1Stearns, Conrad and Schmidt, Consulting Engineers, Inc.
Most cited
By later US patents
- SO.sub.2 sensor181US 5,338,515 ACatalytica, Inc. · 1994
- Apparatus for sensing a chemical property of a spray33US 5,271,904 AElectric Power Research Institute, Inc. · 1993
- Piezoelectric probe for detection and measurement of gaseous pollutants25US 4,111,036 ABoard of Regents for Education of the State of Rhode Island · 1978
- Apparatus for simultaneous measurement of sulfur and non-sulfur containing compounds25US 5,227,135 ASievers Research, Inc. · 1993
- Process for simultaneous measurement of sulfur and non-sulfur containing compounds22US 5,310,683 ASievers Research, Inc. · 1994