F23N 2223/54
Recording
F23N2223/54 (Recording) appears on 24 US grants and 34 published applications in this corpus.
Search patents in F23N- Granted patents
- 24
- Published applications
- 34
- Assignees
- 27
- Inventors
- 99
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 2 | 2 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 2 |
| 2010 | 0 | 4 |
| 2011 | 0 | 2 |
| 2012 | 2 | 2 |
| 2013 | 0 | 1 |
| 2014 | 2 | 2 |
| 2015 | 1 | 2 |
| 2016 | 1 | 0 |
| 2017 | 2 | 4 |
| 2018 | 1 | 1 |
| 2019 | 3 | 0 |
| 2020 | 1 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 5 |
| 2024 | 1 | 1 |
| 2025 | 1 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method to detect flame rod/sensor malfunction24 Mar 2026US 12,584,629 B2Fireye, Inc.
- Electronic control device and flow rate measurement system17 Mar 2026US 12,578,091 B2Hitachi Astemo, Ltd.
- Burner control system21 Oct 2025US 12,449,127 B2Autoflame Engineering Limited
- Fluid heating system with combustion trim learning30 Jan 2024US 11,885,531 B2A. O. Smith Corporation
- Boiler and the method for controlling combustion of the boiler28 Mar 2023US 11,614,258 B2Kyungdong Navien Co., Ltd.
- Method of and control system for monitoring a process of circulation of solid material in a circulating fluidized bed reactor9 Oct 2025US 2025/0314379 A1Sumitomo SHI FW Energia Oy
- Adaptive Electronic Composite System17 Jul 2025US 2025/0230929 A1Siemens Aktiengesellschaft
- Fluid heating system with combustion trim learning4 Apr 2024US 2024/0110728 A1A. O. Smith Corporation
- Electronic Control Device and Flow Rate Measurement System21 Dec 2023US 2023/0408087 A1Hitachi Astemo, Ltd.
- Cooking appliance monitoring system for an apparatus for cooking and a method thereof12 Oct 2023US 2023/0324045 A1
Most cited
By later US patents
- Furnace diagnostic system37US 6,535,838 B2Robertshaw Controls Company · 2003
- Furnace diagnostic system26US 6,658,372 B2Robertshaw Controls Company · 2003
- Burner firing rate determination for modulating furnace21US 8,123,518 B2Honeywell International Inc. · 2012
- Apparatus and method for detecting the presence of a burner flame15US 4,882,573 APullman Canada Ltd. · 1989
- Back draft alarm assembly for combustion heating device11US 7,250,870 B12007