F23N 2225/20
Entrant temperature
Official title: entrant temperature
F23N2225/20 (Entrant temperature) appears on 36 US grants and 39 published applications in this corpus.
Search patents in F23N- Granted patents
- 36
- Published applications
- 39
- Assignees
- 40
- Inventors
- 122
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 4 |
| 2005 | 0 | 0 |
| 2006 | 4 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 1 | 1 |
| 2013 | 1 | 2 |
| 2014 | 1 | 2 |
| 2015 | 1 | 0 |
| 2016 | 1 | 2 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 2 |
| 2020 | 2 | 0 |
| 2021 | 1 | 1 |
| 2022 | 1 | 4 |
| 2023 | 1 | 3 |
| 2024 | 3 | 3 |
| 2025 | 4 | 4 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and processes of eliminating start-up flaring in a gas plant17 Mar 2026US 12,578,740 B2Saudi Arabian Oil Company
- Two-stage catalytic heating systems and methods of operating thereof22 Jul 2025US 12,366,356 B2Proof Energy Inc.
- Temperature control system for an air preheater installation29 Apr 2025US 12,287,092 B2Arvos Ljungstrom LLC
- Collective exhaust system15 Apr 2025US 12,276,421 B2Noritz Corporation
- Aircraft operation4 Mar 2025US 12,241,422 B2ROLLS-ROYCE plc
- Combustion heat source device22 Jan 2026US 2026/0022835 A1Rinnai Corporation
- Total primary combustion burner26 Jun 2025US 2025/0207773 A1National University Corporation Tokai National Higher Education and Research System
- Device for the delivery of a combustible gaseous mixture and procedure27 Feb 2025US 2025/0067432 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.
- Systems and processes of eliminating start-up flaring in a gas plant6 Feb 2025US 2025/0044815 A1Saudi Arabian Oil Company
Most cited
By later US patents
- Dynamic control system and method for catalytic combustion process and gas turbine engine utilizing same90US 6,095,793 AWoodward Governor Company · 2000
- Device for controlling fuel combustion in a burner48US 4,915,615 AIsuzu Motors Limited · 1990
- Automatic firing rate control mode means for a boiler28US 4,716,858 AHoneywell Inc. · 1988
- Adjustable mount for a gas control valve of a water heater27US 6,371,057 B1SRP 68/Pty. Ltd. · 2002
- Method and controller for determining carbon dioxide emissions from a recirculating air heater18US 7,104,460 B2Maxitrol Company · 2006