F23N 2223/42
Function generator
F23N2223/42 (Function generator) appears on 14 US grants and 17 published applications in this corpus.
Search patents in F23N- Granted patents
- 14
- Published applications
- 17
- Assignees
- 14
- Inventors
- 51
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 2 |
| 2012 | 0 | 0 |
| 2013 | 2 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 2 |
| 2019 | 1 | 1 |
| 2020 | 2 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 3 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and apparatus for regulating a flame length in a partial oxidation reactor11 Aug 2026US 12,704,258 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Systems and methods for controlling a heat transfer system25 Nov 2025US 12,480,654 B2Rheem Manufacturing Company
- Combustion monitoring system2 May 2023US 11,639,872 B1GE Inspection Technologies, LP
- Magnet-thermocouple system for fail-safe supply of gas to burners or the like16 Mar 2021US 10,948,191 B2
- Method and device for flame signal detection7 Jul 2020US 10,704,785 B2Viessmann Werke GmbH & Co. KG
- Biomass heater system and method20 Aug 2026US 2026/0243431 A1The Research Foundation for The State University of New York
- Method for Controlling a Burner and Burner Arrangement having a Burner30 Jan 2025US 2025/0035310 A1Truma Gerätetechnik GmbH & Co. KG
- Flame monitor27 Jul 2023US 2023/0235883 A1Azbil Corporation
- Combustion monitoring system13 Apr 2023US 2023/0113509 A1GE Inspection Technologies, LP
- Method and apparatus for regulating a flame length in a partial oxidation reactor5 Jan 2023US 2023/0003381 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
Most cited
By later US patents
- Time varying voltage combustion control and diagnostics sensor28US 7,927,095 B1The United States of America as represented by the United States Department of Energy · 2011
- Method and apparatus for fuel/air control of surface combustion burners15US 5,222,887 AGas Research Institute · 1993
- Oxygen trim controller tuning during combustion system commissioning10US 8,439,667 B2UTC Fire & Security Corporation · 2013
- Gas turbine control device6US 8,490,379 B2Mitsubishi Heavy Industries, Ltd. · 2013
- Exhaust temperature versus turbine pressure ratio based turbine control method and device6US 9,140,195 B2Nuovo Pignone S.p.A. · 2015