F23K 5/18
Cleaning or purging devices
Official title: Cleaning or purging devices, e.g. filters
F23K5/18 (Cleaning or purging devices) appears on 100 US grants and 77 published applications in this corpus.
Search patents in F23K- Granted patents
- 100
- Published applications
- 77
- Assignees
- 52
- Inventors
- 233
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 2 |
| 2004 | 2 | 4 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 3 |
| 2008 | 1 | 3 |
| 2009 | 0 | 0 |
| 2010 | 2 | 2 |
| 2011 | 1 | 4 |
| 2012 | 2 | 6 |
| 2013 | 1 | 6 |
| 2014 | 1 | 4 |
| 2015 | 8 | 2 |
| 2016 | 6 | 5 |
| 2017 | 2 | 9 |
| 2018 | 2 | 2 |
| 2019 | 7 | 2 |
| 2020 | 3 | 3 |
| 2021 | 4 | 4 |
| 2022 | 0 | 5 |
| 2023 | 4 | 0 |
| 2024 | 2 | 5 |
| 2025 | 3 | 2 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Arrangement handling purged alcohol-based fuel and a method thereof8 Sep 2026US 12,729,853 B2Alfa Laval Corporate AB
- Fuel systems and methods for purging4 Aug 2026US 12,698,743 B2Pratt & Whitney Canada Corp.
- Additively manufacturable filter for gas turbine16 Jun 2026US 12,655,973 B1GE Vernova Infrastructure Technology LLC
- Purge system for dual-fuel gas turbine engine12 May 2026US 12,624,665 B2Vericor Power Systems LLC
- Methods and apparatus to regulate a gaseous fuel system27 Jan 2026US 12,535,039 B2General Electric Company
- Methods and apparatus to regulate a gaseous fuel system4 Jun 2026US 2026/0153055 A1General Electric Company
- Fuel systems and methods for purging15 Jan 2026US 2026/0015979 A1Pratt & Whitney Canada Corp.
- Methods and apparatus to regulate a gaseous fuel system17 Jul 2025US 2025/0230774 A1General Electric Company
- System and method for liquid fuel flushing for dual fuel turbines8 May 2025US 2025/0146667 A1GE Infrastructure Technology LLC
- Mobile heating device, and method for operating a mobile heating device24 Oct 2024US 2024/0353101 A1
Most cited
By later US patents
- Methods and apparatus for a combustion turbine fuel recirculation system and nitrogen purge system173US 7,721,521 B2General Electric Company · 2010
- Fuel-conditioning skid147US 7,442,239 B2Ingersoll-Rand Energy Systems Corporation · 2008
- Burner block assembly70US 3,939,871 ARockwell International Corporation · 1976
- Liquid fuel and water injection purge system for a gas turbine60US 6,145,294 AGeneral Electric Company · 2000
- Anti-coking fuel injector purging device58US 6,125,624 APratt & Whitney Canada Corp. · 2000