F23D 14/56
For spreading the flame over an area
Official title: for spreading the flame over an area, e.g. for desurfacing of solid material, for surface hardening or for heating workpieces
F23D14/56 (For spreading the flame over an area) appears on 65 US grants and 73 published applications in this corpus.
Search patents in F23D- Granted patents
- 65
- Published applications
- 73
- Assignees
- 57
- Inventors
- 169
- Latest grant
- 28 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 0 | 3 |
| 2005 | 3 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 3 |
| 2008 | 1 | 1 |
| 2009 | 2 | 5 |
| 2010 | 0 | 9 |
| 2011 | 1 | 1 |
| 2012 | 2 | 1 |
| 2013 | 4 | 2 |
| 2014 | 2 | 8 |
| 2015 | 3 | 2 |
| 2016 | 2 | 10 |
| 2017 | 6 | 2 |
| 2018 | 6 | 6 |
| 2019 | 3 | 3 |
| 2020 | 3 | 4 |
| 2021 | 2 | 1 |
| 2022 | 2 | 4 |
| 2023 | 1 | 0 |
| 2024 | 2 | 3 |
| 2025 | 4 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Compact flame-curtain burner28 Oct 2025US 12,455,074 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Burners and additive manufacturing methods29 Jul 2025US 12,372,232 B23M Innovative Properties Company
- Process for eradicating insects, semi sterilizing, and reducing aflatoxin and fumonisin in dry commodities, and method of use20 May 2025US 12,302,916 B2
- Burning device for combustion calorimetry and combustion analysis of polymeric materials4 Feb 2025US 12,215,858 B2Sichuan University
- Flame arrestors and methods of making flame arrestors18 Jun 2024US 12,013,116 B2Emerson Process Management Regulator Tech., Inc.
- Gas adjusting device and combustion assembly27 Mar 2025US 2025/0102142 A1Grand Mate Co., Ltd.
- Burning device for combustion calorimetry and combustion analysis of polymeric materials9 Jan 2025US 2025/0012438 A1Sichuan University
- Flame torch7 Nov 2024US 2024/0369219 A1Pro-Iroda Industries, Inc.
- Monitoring a flame treatment device15 Aug 2024US 2024/0271871 A1Singulus Technologies AG
- Burners and additive manufacturing methods25 Apr 2024US 2024/0133547 A13M Innovative Properties Company
Most cited
By later US patents
- Method and apparatus for injecting fuel and oxidant into a combustion burner94US 5,545,031 ACombustion Tec, Inc. · 1996
- Oxy-liquid fuel combustion process and apparatus84US 5,567,141 ACombustion Tec, Inc. · 1996
- Method for producing medical glass container and burner for inner surface treatment of medical glass container29US 8,522,575 B2Nipro Corporation · 2013
- Method of producing oxide soot using a burner with a planar burner face21US 6,837,076 B2Corning Incorporated · 2005
- Apparatus for manufacturing a vitreous silica article15US 5,735,928 ATSL Group PLC · 1998