F23K 3/00
Feeding or distributing of lump or pulverulent fuel to combustion apparatus
F23K3/00 (Feeding or distributing of lump or pulverulent fuel to combustion apparatus) appears on 527 US grants and 328 published applications in this corpus.
Search patents in F23K- Granted patents
- 527
- Published applications
- 328
- Assignees
- 298
- Inventors
- 1,100
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 8 | 0 |
| 1978 | 8 | 0 |
| 1979 | 7 | 0 |
| 1980 | 13 | 0 |
| 1981 | 13 | 0 |
| 1982 | 16 | 0 |
| 1983 | 15 | 0 |
| 1984 | 32 | 0 |
| 1985 | 28 | 0 |
| 1986 | 24 | 0 |
| 1987 | 20 | 0 |
| 1988 | 14 | 0 |
| 1989 | 10 | 0 |
| 1990 | 10 | 0 |
| 1991 | 8 | 0 |
| 1992 | 6 | 0 |
| 1993 | 5 | 0 |
| 1994 | 11 | 0 |
| 1995 | 8 | 0 |
| 1996 | 2 | 0 |
| 1997 | 10 | 0 |
| 1998 | 5 | 0 |
| 1999 | 7 | 0 |
| 2000 | 5 | 0 |
| 2001 | 9 | 2 |
| 2002 | 5 | 1 |
| 2003 | 4 | 8 |
| 2004 | 7 | 10 |
| 2005 | 6 | 7 |
| 2006 | 6 | 3 |
| 2007 | 1 | 13 |
| 2008 | 5 | 10 |
| 2009 | 3 | 13 |
| 2010 | 3 | 24 |
| 2011 | 8 | 29 |
| 2012 | 13 | 24 |
| 2013 | 22 | 25 |
| 2014 | 16 | 21 |
| 2015 | 22 | 20 |
| 2016 | 7 | 8 |
| 2017 | 22 | 11 |
| 2018 | 9 | 10 |
| 2019 | 5 | 12 |
| 2020 | 13 | 12 |
| 2021 | 14 | 16 |
| 2022 | 5 | 7 |
| 2023 | 6 | 14 |
| 2024 | 7 | 7 |
| 2025 | 11 | 14 |
| 2026 | 10 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F23K 3/02Pneumatic feeding arrangements, i.e. by air blast273
- F23K 3/16Over-feed arrangements81
- F23K 3/10Under-feed arrangements56
- F23K 3/06Feeding or distributing of lump or pulverulent fuel to combustion apparatus: for10
- F23K 3/22Controlling thickness of fuel bed9
- F23K 3/08Feeding or distributing of lump or pulverulent fuel to combustion apparatus: for2
- F23K 3/04Feeding or distributing of lump or pulverulent fuel to combustion apparatus: for0
Recent patents
- Oxygen detection system and reflow furnace using the same29 Sep 2026US 12,746,614 B2Illinois Tool Works Inc.
- Systems and methods for heating of dispersed metallic particles29 Sep 2026US 12,747,858 B2Oqab Dietrich Induction Inc.
- Calcination unit for decarbonating raw materials7 Jul 2026US 12,674,621 B2Fives Fcb
- Jamming resistant auger for cooker9 Jun 2026US 12,650,220 B2GMG Products, LLC
- Conical fuel particulate distributor for coal supply conduit19 May 2026US 12,631,329 B2SAS Global Corporation
- Apparatus for feeding solid fuel feedstock into a furnace8 Oct 2026US 2026/0309324 A1British American Tobacco (Investments) Limited
- Pellet fueled cooking appliance with an improved hopper configuration10 Sep 2026US 2026/0262882 A1North Atlantic Imports, LLC
- Jamming resistant auger for cooker9 Jul 2026US 2026/0194225 A1GMG Products, LLC
- Ignition, burning stabilization, and energy conservation integrated warm nuclear fusion and pulverized coal combined burning system4 Jun 2026US 2026/0153234 A1Leading Guochuang (Beijing) Technology Group Co., LTD
- Wood chip combustion furnace4 Jun 2026US 2026/0153240 A1Haohong Electric Technology (Hubei) Co., Ltd.
Most cited
By later US patents
- Burner furnace for solid fuels and a method of burning different kinds of solid fuel in this furnace357US 4,250,817 AThermo Murg K.G. · 1981
- Combustion method and apparatus for producing a carbon dioxide end product164US 6,202,574 B1ABB Alstom Power Inc. · 2001
- Mobile pellet stove with thermal barrier and ventilated firepot88US 5,429,110 ATSD Industries, Inc. · 1995
- Biomass gasification system and method82US 6,808,543 B2Ferco Enterprises, Inc. · 2004
- Densified fuel pellets70US 7,960,325 B2Renewable Densified Fuels, LLC · 2011