G01N 33/0004
Gaseous mixtures
Official title: {Gaseous mixtures, e.g. polluted air}
G01N33/0004 (Gaseous mixtures) appears on 8,008 US grants and 9,029 published applications in this corpus.
Search patents in G01N- Granted patents
- 8,008
- Published applications
- 9,029
- Assignees
- 3,737
- Inventors
- 18,783
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 53 | 0 |
| 1977 | 37 | 0 |
| 1978 | 44 | 0 |
| 1979 | 45 | 0 |
| 1980 | 38 | 0 |
| 1981 | 55 | 0 |
| 1982 | 51 | 0 |
| 1983 | 45 | 0 |
| 1984 | 36 | 0 |
| 1985 | 35 | 0 |
| 1986 | 41 | 0 |
| 1987 | 36 | 0 |
| 1988 | 36 | 0 |
| 1989 | 53 | 0 |
| 1990 | 33 | 0 |
| 1991 | 50 | 0 |
| 1992 | 63 | 0 |
| 1993 | 74 | 0 |
| 1994 | 90 | 0 |
| 1995 | 67 | 0 |
| 1996 | 84 | 0 |
| 1997 | 74 | 0 |
| 1998 | 98 | 0 |
| 1999 | 109 | 0 |
| 2000 | 108 | 0 |
| 2001 | 115 | 39 |
| 2002 | 110 | 120 |
| 2003 | 111 | 161 |
| 2004 | 96 | 177 |
| 2005 | 87 | 147 |
| 2006 | 93 | 148 |
| 2007 | 105 | 133 |
| 2008 | 81 | 149 |
| 2009 | 81 | 160 |
| 2010 | 111 | 169 |
| 2011 | 124 | 196 |
| 2012 | 99 | 189 |
| 2013 | 137 | 256 |
| 2014 | 188 | 367 |
| 2015 | 211 | 490 |
| 2016 | 301 | 516 |
| 2017 | 393 | 558 |
| 2018 | 433 | 563 |
| 2019 | 463 | 551 |
| 2020 | 493 | 669 |
| 2021 | 491 | 614 |
| 2022 | 468 | 646 |
| 2023 | 510 | 575 |
| 2024 | 452 | 571 |
| 2025 | 450 | 481 |
| 2026 | 350 | 384 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sensor element6 Oct 2026US 12,754,161 B2NGK Insulators, Ltd.
- Analysis device and analysis method for quality index of natural gas product and application6 Oct 2026US 12,754,171 B2PetroChina Company Limited
- Methods of detecting perfluoroalkyl or polyfluoroalkyl substances6 Oct 2026US 12,754,174 B2Shaw Industries Group, Inc.
- Artificial intelligence apparatus for detecting target gas in small sample domain and operating method thereof6 Oct 2026US 12,754,175 B2Electronics and Telecommunications Research Institute
- Gas sampling mechanism and gas analysis device having the same6 Oct 2026US 12,754,176 B2Triple Win Technology(Shenzhen) Co. Ltd.
- Precipitation soil erosion and microbial respiration monitoring device8 Oct 2026US 2026/0309601 A1Zhengzhou University
- Gas sensor8 Oct 2026US 2026/0309656 A1TDK Corporation
- Microchip gas sensing capacitor8 Oct 2026US 2026/0309666 A1Serinus Labs, Inc
- Device and method for monitoring gas8 Oct 2026US 2026/0309687 A1Piovan S.P.A.
- Gas sensor for skin gas and gas sensor system for skin gas8 Oct 2026US 2026/0309688 A1Nissha Co., Ltd.
Most cited
By later US patents
- Ozone generator with in-line ozone sensor515US 5,540,898 AVasogen, Inc. · 1996
- System for detecting base contaminants in air504US 6,096,267 AExtraction Systems, Inc. · 2000
- Method and apparatus for detecting toxic gases499US 5,057,436 AAgMaster, Inc. · 1991
- 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