G01N 2291/0217
Smoke, combustion gases
G01N2291/0217 (Smoke, combustion gases) appears on 62 US grants and 56 published applications in this corpus.
Search patents in G01N- Granted patents
- 62
- Published applications
- 56
- Assignees
- 56
- Inventors
- 142
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 4 | 9 |
| 2003 | 4 | 8 |
| 2004 | 3 | 3 |
| 2005 | 8 | 4 |
| 2006 | 7 | 3 |
| 2007 | 3 | 3 |
| 2008 | 2 | 1 |
| 2009 | 1 | 2 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 3 | 0 |
| 2013 | 1 | 3 |
| 2014 | 1 | 2 |
| 2015 | 0 | 4 |
| 2016 | 1 | 1 |
| 2017 | 5 | 2 |
| 2018 | 1 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 3 |
| 2024 | 0 | 1 |
| 2025 | 2 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Autonomous real-time sulfur dioxide and carbon dioxide monitor for marine exhaust emissions14 Jul 2026US 12,680,912 B2Seaarctos Holdings, LLC
- Method for determining a property of a sample fluid or a resonant frequency of a resonator cell10 Mar 2026US 12,571,775 B2Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Photoacoustic detection system with differential amplifier for determing target species presence and triggering fault13 May 2025US 12,298,276 B2Kidde Fire Protection, LLC
- Optical machine of smoke detector7 Jan 2025US 12,188,865 B2Pixart Imaging Inc.
- Photoacoustic detection system with clocked tuning fork positions12 Sep 2023US 11,754,533 B2Carrier Corporation
- Photoacoustic spectrometer for real-time dust monitoring20 Mar 2025US 2025/0093249 A1Board of Regents of the Nevada System of Higher Education, on Behalf of the University of Nevada, Re
- Smoke detector reducing false alarm rate27 Feb 2025US 2025/0067667 A1Pixart Imaging Inc.
- Method for determining a property of a sample fluid or a resonant frequency of a resonator cell28 Mar 2024US 2024/0102970 A1Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Photoacoustic detection system21 Dec 2023US 2023/0408455 A1Carrier Corporation
- Optical machine of smoke detector2 Mar 2023US 2023/0060584 A1Pixart Imaging Inc.
Most cited
By later US patents
- Apparatus, systems and methods for detecting and transmitting sensory data over a computer network184US 7,089,780 B2Smiths Detection Inc. · 2006
- Apparatus, systems and methods for detecting and transmitting sensory data over a computer network119US 6,422,061 B1Cyrano Sciences, Inc. · 2002
- Conversion of liquid volume, density, and viscosity to frequency signals104US 5,533,381 A1996
- Fluid parameter measurement for industrial sensing applications using acoustic pressures82US 6,732,575 B2CiDRA Corporation · 2004
- Use of an array of polymeric sensors of varying thickness for detecting analytes in fluids75US 6,387,329 B1California Institute of Technology · 2002