F23N 2229/16
Flame sensors: using two or more of the same types of flame
Official title: using two or more of the same types of flame sensor
F23N2229/16 (Flame sensors: using two or more of the same types of flame) appears on 61 US grants and 38 published applications in this corpus.
Search patents in F23N- Granted patents
- 61
- Published applications
- 38
- Assignees
- 58
- Inventors
- 150
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 2 |
| 2004 | 2 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 1 | 2 |
| 2008 | 0 | 2 |
| 2009 | 1 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 1 |
| 2012 | 1 | 7 |
| 2013 | 2 | 2 |
| 2014 | 1 | 0 |
| 2015 | 1 | 2 |
| 2016 | 1 | 2 |
| 2017 | 2 | 1 |
| 2018 | 1 | 1 |
| 2019 | 5 | 2 |
| 2020 | 1 | 2 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 3 |
| 2024 | 0 | 1 |
| 2025 | 2 | 4 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Control unit for detecting a flame in operation using flame monitors suitable for burners and flame monitoring system1 Sep 2026US 12,723,756 B2BFI Automation Mindermann GmbH
- Apparatus and method capable of monitoring and adjusting in-furnace combustion conditions in real time24 Jun 2025US 12,338,997 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Optical detection system for a gas turbine engine combustion assembly17 Jun 2025US 12,331,929 B2Rtx Corporation
- Systems for avoiding harmonic modes of gas burners21 Mar 2023US 11,608,984 B1Brunswick Corporation
- Combustion apparatus and hot water apparatus12 Jul 2022US 11,384,935 B2Noritz Corporation
- Oven appliance with flame proving24 Jul 2025US 2025/0237385 A1Haier US Appliance Solutions, Inc.
- Burner Control System of or for a Heating System and Method for Controlling a Burner Control System8 May 2025US 2025/0146665 A1Intergas Verwarming B.V.
- Method and apparatus for monitoring and controlling combustion in combustible gas burner apparatus13 Feb 2025US 2025/0052423 A1Sit S.P.A.
- Single-pixel multispectral imager for flare and burner combustion efficiency measurement6 Feb 2025US 2025/0044219 A1Schlumberger Technology Corporation
- Optical detection system for a gas turbine engine combustion assembly15 Aug 2024US 2024/0271784 A1Raytheon Technologies Corporation
Most cited
By later US patents
- Fault-tolerant multi-point flame sense circuit127US 6,794,771 B2Ranco Incorporated of Delaware · 2004
- Heater with flame powered logic supply circuit66US 4,984,981 AA. O. Smith Corporation · 1991
- Dual detector flame sensor59US 4,370,557 AHoneywell Inc. · 1983
- Atmospheric gas burner and control system53US 5,391,074 A1995
- Automatic burner monitor and control for furnaces49US 4,043,742 AEnvironmental Data Corporation · 1977