F23D 11/40
Mixing tubes
Official title: Mixing tubes; Burner heads
F23D11/40 (Mixing tubes) appears on 322 US grants and 239 published applications in this corpus.
Search patents in F23D- Granted patents
- 322
- Published applications
- 239
- Assignees
- 161
- Inventors
- 569
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 7 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 8 | 0 |
| 1983 | 1 | 0 |
| 1984 | 9 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 6 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 10 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 6 | 0 |
| 1996 | 12 | 0 |
| 1997 | 3 | 0 |
| 1998 | 7 | 0 |
| 1999 | 11 | 0 |
| 2000 | 14 | 0 |
| 2001 | 8 | 6 |
| 2002 | 7 | 5 |
| 2003 | 6 | 6 |
| 2004 | 9 | 14 |
| 2005 | 5 | 7 |
| 2006 | 5 | 4 |
| 2007 | 0 | 6 |
| 2008 | 4 | 8 |
| 2009 | 2 | 13 |
| 2010 | 4 | 12 |
| 2011 | 6 | 6 |
| 2012 | 3 | 7 |
| 2013 | 11 | 14 |
| 2014 | 2 | 15 |
| 2015 | 7 | 24 |
| 2016 | 20 | 13 |
| 2017 | 14 | 8 |
| 2018 | 11 | 8 |
| 2019 | 9 | 20 |
| 2020 | 11 | 11 |
| 2021 | 10 | 7 |
| 2022 | 10 | 9 |
| 2023 | 6 | 2 |
| 2024 | 5 | 6 |
| 2025 | 6 | 6 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Compact low emissions burner nozzle using additive manufacturing15 Sep 2026US 12,736,218 B2Honeywell International Inc.
- Pilot fuel nozzle assembly with vented venturi2 Jun 2026US 12,644,604 B2General Electric Company
- Burner apparatus5 May 2026US 12,618,557 B2Honeywell International Inc.
- Nozzle assembly with a central fuel pipe that is sealed against an in-flow of air24 Mar 2026US 12,584,631 B2Rolls-Royce Deutschland Ltd & Co KG
- Multi-autoclave lateral conversion module30 Dec 2025US 12,508,564 B2Bright Sand, Inc.
- Burner apparatus20 Aug 2026US 2026/0243419 A1Honeywell International Inc.
- Burner apparatus26 Mar 2026US 2026/0085833 A1Honeywell International Inc.
- Burner device18 Dec 2025US 2025/0383082 A2Dürr Systems AG
- High Efficiency Low NOx Burner24 Jul 2025US 2025/0237380 A1Power Flame Incorporated
- Burner device19 Jun 2025US 2025/0198617 A1Dürr Systems AG
Most cited
By later US patents
- Reheat combustion system for a gas turbine121US 6,981,358 B2ALSTOM Technology Ltd · 2006
- Staged prevaporizer-premixer115US 6,174,160 B1University of Washington · 2001
- Injector for turbine engines97US 5,657,631 AB.B.A. Research & Development, Inc. · 1997
- Process for premixing-type combustion of liquid fuel93US 4,932,861 ABBC Brown, Boveri & Company, Limited · 1990
- Outer shear layer swirl mixer for a combustor93US 5,603,211 AUnited Technologies Corporation · 1997