F23K 1/04
Heating fuel prior to delivery to combustion apparatus
F23K1/04 (Heating fuel prior to delivery to combustion apparatus) appears on 123 US grants and 89 published applications in this corpus.
Search patents in F23K- Granted patents
- 123
- Published applications
- 89
- Assignees
- 91
- Inventors
- 294
- Latest grant
- 9 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 5 |
| 2007 | 2 | 7 |
| 2008 | 0 | 4 |
| 2009 | 3 | 3 |
| 2010 | 0 | 5 |
| 2011 | 5 | 9 |
| 2012 | 2 | 4 |
| 2013 | 8 | 9 |
| 2014 | 4 | 9 |
| 2015 | 9 | 3 |
| 2016 | 4 | 6 |
| 2017 | 1 | 2 |
| 2018 | 5 | 4 |
| 2019 | 4 | 4 |
| 2020 | 2 | 2 |
| 2021 | 7 | 3 |
| 2022 | 0 | 3 |
| 2023 | 1 | 2 |
| 2024 | 3 | 1 |
| 2025 | 3 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- System and method for combusting high-moisture fuel to generate steam9 Sep 2025US 12,410,914 B2Air Products and Chemicals, Inc.
- Combustible ice efficient combustion system20 May 2025US 12,305,852 B2Guangdong University of Technology
- Method and apparatus for treating combustible substance14 Jan 2025US 12,196,417 B2Taiheiyo Engineering Inc.
- Method and system for improving boiler effectiveness27 Aug 2024US 12,072,096 B2Arvos Ljungstrom LLC
- Pulverized coal drying system for pulverizer, pulverized coal drying method therefor, pulverized coal drying program, pulverizer, and integrated gasification combined cycle9 Jul 2024US 12,031,720 B2Mitsubishi Heavy Industries, Ltd.
- System and Method for Combusting High-Moisture Fuel to Generate Steam25 Sep 2025US 2025/0297735 A1Air Products and Chemicals, Inc.
- Biomass energy generation26 Jun 2025US 2025/0205635 A1Bluebox Energy Ltd
- Process for replacement of fossil fuels in firing of rotary lime kilns4 Apr 2024US 2024/0110111 A1
- Multi-functional fecal waste and garbage processor and associated methods12 Oct 2023US 2023/0323796 A1Bill & Melinda Gates Foundation
- Combustible ice efficient combustion system2 Mar 2023US 2023/0062586 A1Guangdong University of Technology
Most cited
By later US patents
- Densified fuel pellets70US 7,960,325 B2Renewable Densified Fuels, LLC · 2011
- Power generator system55US 4,414,813 A1983
- Method and apparatus for use in drying biomass particles42US 4,564,368 A1986
- Method of firing a pulverized fuel-fired steam generator28US 4,411,204 ACombustion Engineering, Inc. · 1983
- Apparatus and method of enhancing the quality of high-moisture materials and separating and concentrating organic and/or non-organic material contained therein25US 8,062,410 B2Great River Energy · 2011