F23N 2227/20
Calibrating devices
F23N2227/20 (Calibrating devices) appears on 75 US grants and 60 published applications in this corpus.
Search patents in F23N- Granted patents
- 75
- Published applications
- 60
- Assignees
- 53
- Inventors
- 206
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 7 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 2 |
| 2002 | 3 | 2 |
| 2003 | 2 | 1 |
| 2004 | 3 | 3 |
| 2005 | 0 | 2 |
| 2006 | 0 | 3 |
| 2007 | 1 | 1 |
| 2008 | 2 | 0 |
| 2009 | 0 | 6 |
| 2010 | 0 | 0 |
| 2011 | 3 | 4 |
| 2012 | 2 | 2 |
| 2013 | 2 | 1 |
| 2014 | 2 | 2 |
| 2015 | 1 | 2 |
| 2016 | 2 | 2 |
| 2017 | 1 | 6 |
| 2018 | 2 | 0 |
| 2019 | 5 | 1 |
| 2020 | 1 | 4 |
| 2021 | 0 | 1 |
| 2022 | 3 | 4 |
| 2023 | 4 | 6 |
| 2024 | 1 | 2 |
| 2025 | 1 | 3 |
| 2026 | 4 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and controller for operating a gas burner appliance19 May 2026US 12,631,331 B2Pittway Sarl
- Method for operating a gas burner and gas burner for performing the method28 Apr 2026US 12,613,033 B2Viessmann Climate Solutions SE
- Power output determination by way of a fuel parameter3 Mar 2026US 12,565,994 B2Siemens Aktiengesellschaft
- Closed-loop control of a combustion apparatus3 Mar 2026US 12,565,995 B2Siemens Aktiengesellschaft
- Gas appliance and a control method thereof7 Jan 2025US 12,188,579 B2Grand Mate Co., Ltd.
- Sensor-Driven Variable Gas Flow Burner System18 Sep 2025US 2025/0290631 A1
- Device for the delivery of a combustible gaseous mixture and procedure1 May 2025US 2025/0137639 A1Sit S.P.A.
- Method and apparatus for monitoring and controlling combustion in combustible gas burner apparatus13 Feb 2025US 2025/0052423 A1Sit S.P.A.
- Method and controller for operating a gas burner appliance and gas burner appliance11 Jul 2024US 2024/0230084 A1Pittway Sarl
- Method and controller for operating a gas burner appliance21 Mar 2024US 2024/0093868 A1Pittway Sarl
Most cited
By later US patents
- Integrated appliance control system186US 6,059,195 ATridelta Industries, Inc. · 2000
- Variable speed inducer motor control method99US 5,791,332 ACarrier Corporation · 1998
- Flame ionization control apparatus and method78US 5,971,745 AGas Research Institute · 1999
- Method and apparatus for optimizing fuel-to-air ratio in the combustible gas supply of a radiant burner74US 5,037,291 ACarrier Corporation · 1991
- Arrangement for adjusting the gas supply and the control of an operating pressure to a gas cooking apparatus having a gas-radiation burner mounted below a cooking surface74US 6,076,517 ASchott Glas · 2000