F23N 2239/02
Solid fuels
F23N2239/02 (Solid fuels) appears on 103 US grants and 53 published applications in this corpus.
Search patents in F23N- Granted patents
- 103
- Published applications
- 53
- Assignees
- 75
- Inventors
- 258
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 6 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 1 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 1 | 2 |
| 2007 | 0 | 6 |
| 2008 | 3 | 2 |
| 2009 | 1 | 3 |
| 2010 | 1 | 5 |
| 2011 | 3 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 2 |
| 2019 | 2 | 2 |
| 2020 | 3 | 4 |
| 2021 | 2 | 6 |
| 2022 | 2 | 5 |
| 2023 | 4 | 1 |
| 2024 | 4 | 1 |
| 2025 | 6 | 2 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for regulating a pellet-fired burner and corresponding installation25 Aug 2026US 12,716,585 B2N2Air
- Coal conveying control system and method for thermal power plant27 Jan 2026US 12,535,209 B1Huaneng Chaohu Power Generation Co., Ltd.
- Stove, control system, and method for controlling the same9 Dec 2025US 12,492,817 B2A.J. Wells & Sons Limited
- Optical feedback control mechanism for solid reactant strand positioning4 Nov 2025US 12,460,816 B2The Government of the United States of America, as represented by the Secretary of the Navy
- Anomaly detection device and display device12 Aug 2025US 12,385,635 B2IHI Corporation
- Biomass heater system and method20 Aug 2026US 2026/0243431 A1The Research Foundation for The State University of New York
- Wood chip combustion furnace4 Jun 2026US 2026/0153240 A1Haohong Electric Technology (Hubei) Co., Ltd.
- Combustion system comprising an annular shroud burner5 Feb 2026US 2026/0036299 A1Jupiter Oxygen Corporation
- Coal conveying control system and method for thermal power plant29 Jan 2026US 2026/0029122 A1Huaneng Chaohu Power Generation Co., Ltd.
- Air supply systems for combustion of granular biomass fuels15 Jan 2026US 2026/0016165 A1Aprovecho Research Center
Most cited
By later US patents
- Combustion optimization with inferential sensor78US 6,622,645 B2Honeywell International Inc. · 2003
- Methods and systems for improving thermal efficiency, determining effluent flows and for determining fuel mass flow rates of a fossil fuel fired system61US 5,790,420 A1998
- 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