F23D 11/24
Burners using a direct spraying action of liquid droplets or vaporised liquid
Official title: by pressurisation of the fuel before a nozzle through which it is sprayed by a substantial pressure reduction into a space
F23D11/24 (Burners using a direct spraying action of liquid droplets or vaporised liquid) appears on 183 US grants and 157 published applications in this corpus.
Search patents in F23D- Granted patents
- 183
- Published applications
- 157
- Assignees
- 127
- Inventors
- 469
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 6 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 5 | 1 |
| 2003 | 2 | 3 |
| 2004 | 3 | 7 |
| 2005 | 7 | 4 |
| 2006 | 4 | 11 |
| 2007 | 2 | 7 |
| 2008 | 1 | 6 |
| 2009 | 6 | 8 |
| 2010 | 2 | 4 |
| 2011 | 1 | 9 |
| 2012 | 2 | 1 |
| 2013 | 5 | 5 |
| 2014 | 5 | 9 |
| 2015 | 3 | 17 |
| 2016 | 7 | 13 |
| 2017 | 14 | 8 |
| 2018 | 9 | 5 |
| 2019 | 3 | 11 |
| 2020 | 6 | 8 |
| 2021 | 11 | 3 |
| 2022 | 4 | 2 |
| 2023 | 4 | 7 |
| 2024 | 4 | 4 |
| 2025 | 3 | 2 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multi-tube burner system for efficient mixing of fuel and air for combustion31 Mar 2026US 12,590,698 B2Sustainable Business & Engineering Solutions GmbH
- Liquid fuel self-sustaining combustion burner for flame synthesis12 Aug 2025US 12,385,636 B2Tsinghua University
- Multiphase fuel injector17 Jun 2025US 12,331,933 B2Woodward, Inc.
- Methods and apparatus for bitless drilling27 May 2025US 12,312,954 B2Helmerich & Payne Technologies, LLC
- Tangential pressure atomizing tip without feed chamber17 Sep 2024US 12,092,331 B2Woodward, Inc.
- Bushing for a burner to reduce combustion byproducts and oil dripping7 May 2026US 2026/0126173 A1Cowles Operating Company
- Co-firing combustor with gas fuel and liquid ammonia5 Mar 2026US 2026/0063298 A1GE Vernova Infrastructure Technology LLC
- Methods and apparatus for bitless drilling7 Aug 2025US 2025/0250865 A1Helmerich & Payne Technologies, LLC
- Fuel-burning lance for burners12 Jun 2025US 2025/0189125 A1Vallourec Tubos Do Brasil Ltda.
- Proportional control of cooling circuit of fuel nozzle15 Aug 2024US 2024/0271571 A1Collins Engine Nozzles, Inc.
Most cited
By later US patents
- Nozzle including a venturi tube creating external cavitation collapse for atomization67US 5,431,346 A1995
- Air assist fuel nozzle54US 6,688,534 B2Delavan Inc. · 2004
- Dual fuel path stem for a gas turbine engine52US 4,735,044 AGeneral Electric Company · 1988
- Fuel injector utilizing non-thermal plasma activation46US 7,625,531 B1Los Alamos National Security, LLC · 2009
- Reduced coking of fuel nozzles42US 4,798,330 AFuel Systems Textron Inc. · 1989