G08B 29/043
Of fire detection circuits
Official title: {of fire detection circuits}
G08B29/043 (Of fire detection circuits) appears on 178 US grants and 178 published applications in this corpus.
Search patents in G08B- Granted patents
- 178
- Published applications
- 178
- Assignees
- 78
- Inventors
- 340
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 2 |
| 2002 | 2 | 3 |
| 2003 | 2 | 0 |
| 2004 | 0 | 1 |
| 2005 | 2 | 3 |
| 2006 | 2 | 2 |
| 2007 | 3 | 2 |
| 2008 | 1 | 3 |
| 2009 | 2 | 2 |
| 2010 | 2 | 7 |
| 2011 | 2 | 1 |
| 2012 | 3 | 1 |
| 2013 | 3 | 5 |
| 2014 | 3 | 2 |
| 2015 | 4 | 9 |
| 2016 | 8 | 7 |
| 2017 | 6 | 5 |
| 2018 | 10 | 9 |
| 2019 | 6 | 10 |
| 2020 | 9 | 13 |
| 2021 | 15 | 22 |
| 2022 | 11 | 13 |
| 2023 | 16 | 11 |
| 2024 | 13 | 21 |
| 2025 | 13 | 14 |
| 2026 | 9 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Benchmark test point with integrated RFID technology for a particle detector15 Sep 2026US 12,736,442 B2Rockwell Research and Development Group, LLC
- Systems and methods for blockage detection in gas detectors18 Aug 2026US 12,710,348 B2Detector Electronics Buyer US, LLC
- Fire detector having unheated thermistors for capturing thermal fluctuations in the region of the inlet openings28 Jul 2026US 12,694,780 B2Siemens Schweiz AG
- Leakage current noise reduction for ionization chamber based alarms30 Jun 2026US 12,670,775 B2Microchip Technology Incorporated
- Walk test for fire alarm systems using a mobile device16 Jun 2026US 12,658,024 B2Honeywell International Inc.
- Event sensing device23 Jul 2026US 2026/0212751 A1Honeywell International Inc.
- Methods for setting addresses in a building management system and installation tool for such a system25 Jun 2026US 2026/0179469 A1Thorn Security Limited
- Fire loop extender module25 Jun 2026US 2026/0179474 A1Honeywell International Inc.
- Multi-gas fire sensing device testing11 Jun 2026US 2026/0162518 A1Honeywell International Inc.
- Monitoring an aerosol density level in a fire sensing device11 Jun 2026US 2026/0162520 A1Honeywell International Inc.
Most cited
By later US patents
- Light scattering smoke detector having conical and concave surfaces110US 4,728,801 AThorn EMI Protech Limited · 1988
- Adverse condition detector with diagnostics67US 7,403,128 B2Maple Chase Company · 2008
- Smoke, fire and gas alarm with remote sensing, back-up emergency power, and system self monitoring66US 4,088,986 A1978
- Self-testing system and method38US 7,053,766 B2Honeywell International Inc. · 2006
- Combustible gas detection system36US 4,464,653 AThe Bendix Corporation · 1984