G01N 1/2252
In a vehicle exhaust
Official title: {in a vehicle exhaust}
G01N1/2252 (In a vehicle exhaust) appears on 321 US grants and 325 published applications in this corpus.
Search patents in G01N- Granted patents
- 321
- Published applications
- 325
- Assignees
- 153
- Inventors
- 641
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 6 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 5 |
| 2002 | 10 | 15 |
| 2003 | 9 | 19 |
| 2004 | 16 | 17 |
| 2005 | 10 | 7 |
| 2006 | 10 | 10 |
| 2007 | 6 | 6 |
| 2008 | 9 | 14 |
| 2009 | 9 | 11 |
| 2010 | 10 | 10 |
| 2011 | 4 | 12 |
| 2012 | 9 | 19 |
| 2013 | 17 | 23 |
| 2014 | 12 | 20 |
| 2015 | 14 | 20 |
| 2016 | 16 | 15 |
| 2017 | 9 | 14 |
| 2018 | 17 | 13 |
| 2019 | 15 | 18 |
| 2020 | 15 | 15 |
| 2021 | 12 | 12 |
| 2022 | 12 | 6 |
| 2023 | 6 | 9 |
| 2024 | 5 | 7 |
| 2025 | 7 | 4 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Autonomous real-time sulfur dioxide and carbon dioxide monitor for marine exhaust emissions14 Jul 2026US 12,680,912 B2Seaarctos Holdings, LLC
- Measurement method, and brake dust measurement program instructions17 Feb 2026US 12,553,802 B2Horiba, Ltd.
- Exhaust gas analyzing device, gas supply method, and exhaust gas sampling device17 Feb 2026US 12,553,873 B2Horiba, Ltd.
- Dilution gas mixing unit and exhaust gas analysis system6 Jan 2026US 12,517,019 B2Horiba, Ltd.
- Gas analysis system for vehicles and arrangement of such systems30 Dec 2025US 12,510,532 B2ZF Friedrichshafen AG
- Exhaust system having nox sampling device and exhaust conduit assembly11 Jun 2026US 2026/0160195 A1Caterpillar Inc.
- Exhaust sampler11 Jun 2026US 2026/0160649 A1Cummins Emission Solutions Inc.
- Exhaust gas dilution apparatus and particle measurement apparatus including the same16 Apr 2026US 2026/0104339 A1Samsung Electronics Co., Ltd.
- Atmospheric moisture measuring system19 Feb 2026US 2026/0049907 A1Honeywell International Inc.
- Vehicle-mounted drain separator, and vehicle-mounted exhaust gas analysis device25 Dec 2025US 2025/0389625 A1Horiba, Ltd.
Most cited
By later US patents
- Probe for taking gas samples and heat measurements in a shaft furnace485US 5,108,192 APaul Wurth S. A. · 1992
- Method and apparatus for mixing gases352US 6,928,890 B2Caterpillar Inc. · 2005
- Method and apparatus for mixing gases351US 7,100,459 B2Caterpillar Inc. · 2006
- Method and apparatus for mixing gases347US 6,684,719 B2Caterpillar Inc. · 2004
- Apparatus for monitoring engine exhaust83US 7,696,501 B2Hartridge Limited · 2010