F23N 2223/26
With capacitors
Official title: with capacitors
F23N2223/26 (With capacitors) appears on 30 US grants and 3 published applications in this corpus.
Search patents in F23N- Granted patents
- 30
- Published applications
- 3
- Assignees
- 13
- Inventors
- 28
- Latest grant
- 19 Jan 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Magnetically secured burner cap19 Jan 2021US 10,895,381 B2BSH Hausgeräte GmbH
- Safety valve supply circuit for the ignition of a gas burner5 Oct 2010US 7,806,683 B2Orkli, S. Coop.
- Heat exchanger system, fuel control system therefor and methods of making the same20 Sep 1994US 5,348,466 ARobertshaw Controls Company
- Heat exchanger system, fuel control system therefor, and methods of making the same11 May 1993US 5,209,655 ARobertshaw Controls Company
- Heat exchanger system, fuel control system therefor25 Aug 1992US 5,141,431 ARobertshaw Controls Company
Most cited
By later US patents
- Fuel ignition control system42US 4,242,079 AJohnson Controls GmbH · 1980
- Direct ignition system for gas appliance with DC power source40US 4,303,385 AJohnson Controls GmbH · 1981
- Burner control system19US 4,243,372 AElectronics Corporation of America · 1981
- Fuel ignition control arrangement having a timing circuit with fast reset18US 4,260,362 AJohnson Controls GmbH · 1981
- Electronic controller for fluid fuel burner17US 4,906,177 AR. E. Phelon Company, Inc. · 1990