F23N 2227/06
Postpurge
F23N2227/06 (Postpurge) appears on 48 US grants and 21 published applications in this corpus.
Search patents in F23N- Granted patents
- 48
- Published applications
- 21
- Assignees
- 34
- Inventors
- 104
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 2 |
| 2014 | 1 | 1 |
| 2015 | 2 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 0 | 0 |
| 2021 | 2 | 2 |
| 2022 | 1 | 2 |
| 2023 | 2 | 0 |
| 2024 | 0 | 3 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for fuel selection for combustion devices7 Jul 2026US 12,674,577 B2Rheem Manufacturing Company
- Atomization burner with flexible fire rate24 Oct 2023US 11,796,171 B2Babington Technology, Inc.
- System and method for fuel nozzle cleaning during engine operation19 Sep 2023US 11,761,386 B2General Electric Company
- System and method for fuel nozzle cleaning during engine operation14 Jun 2022US 11,359,554 B2General Electric Company
- Atomization burner with flexible fire rate31 Aug 2021US 11,105,504 B2Babington Technology, Inc.
- Method for detecting the presence of flame in a premixed hydrogen burner1 Jan 2026US 2026/0002670 A1Ariston S.P.A.
- System of preventing backflash in pre-mixed hydrogen burner and method thereof12 Sep 2024US 2024/0302041 A1Hyundai Motor Company
- Counter-flow heat reduction cycle8 Aug 2024US 2024/0263780 A1Rheem Manufacturing Company
- Systems and Methods for Fuel Selection for Combustion Devices11 Jan 2024US 2024/0011631 A1Rheem Manufacturing Company
- System and method for fuel nozzle cleaning during engine operation15 Sep 2022US 2022/0290620 A1General Electric Company
Most cited
By later US patents
- Integrated appliance control system186US 6,059,195 ATridelta Industries, Inc. · 2000
- Ignition control system for a gas appliance131US 4,695,246 ALennox Industries Inc. · 1987
- Furnace fan control96US 4,684,060 AHoneywell Inc. · 1987
- Method for providing variable output gas-fired furnace with a constant temperature rise and efficiency88US 4,688,547 ACarrier Corporation · 1987
- Integrated furnace control69US 5,271,556 AAmerican Standard Inc. · 1993