F23H 15/00
Cleaning arrangements for grates
Official title: Cleaning arrangements for grates (not forming part of the grate F23J1/00); Moving fuel along grates (grates with bars rocked about their longitudinal axes and specially adapted for moving fuel along the grate F23H9/10; for travelling-grates F23H11/22)
F23H15/00 (Cleaning arrangements for grates) appears on 32 US grants and 29 published applications in this corpus.
Search patents in F23H- Granted patents
- 32
- Published applications
- 29
- Assignees
- 21
- Inventors
- 62
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 5 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 3 |
| 2009 | 1 | 2 |
| 2010 | 1 | 1 |
| 2011 | 1 | 0 |
| 2012 | 1 | 4 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 3 | 6 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 3 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 4 |
| 2023 | 2 | 1 |
| 2024 | 0 | 1 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Combustion system for solid biomass fuel13 Jan 2026US 12,523,372 B2Colorado State University Research Foundation
- Biomass heating system with optimized flue gas treatment25 Jul 2023US 11,708,999 B2Sl-Technik GmbH
- Rotating grate with a cleaning device for a biomass heating system25 Apr 2023US 11,635,231 B2Sl-Technik GmbH
- Wood pellet boiler31 Jul 2018US 10,036,554 B2Warmflow Engineering Company Limited
- Pellet boiler with removable grate24 Jul 2018US 10,030,870 B2
- Burning apparatus having bulk material layer to reduce particulate matter16 Jan 2025US 2025/0020326 A9
- Burning apparatus having bulk material layer to reduce particulate matter12 Sep 2024US 2024/0302047 A1
- Combustion system for solid biomass fuel2 Mar 2023US 2023/0065497 A1Colorado State University Research Foundation
- Biomass heating system, as well as its components27 Oct 2022US 2022/0341625 A1Sl-Technik GmbH
- Rotating grate with a cleaning device for a biomass heating system20 Oct 2022US 2022/0333770 A1Sl-Technik GmbH
Most cited
By later US patents
- Pellet fuel burner for heating and drying systems29US 5,893,358 APyro Industries, Inc. · 1999
- Pellet burning heating assembly27US 7,530,351 B22009
- Combustion grate for pellet fueled stove24US 5,137,010 APyro Industries, Inc. · 1992
- Self concentrating combustion grate for pellet fueled stoves22US 5,383,446 APyro Industries, Inc. · 1995
- Combustion grate with rods for pellet fueled stove19US 5,295,474 APyro Industries, Inc. · 1994