F23N 2223/28
With more than one timing element
Official title: with more than one timing element
F23N2223/28 (With more than one timing element) appears on 13 US grants and 0 published applications in this corpus.
Search patents in F23N- Granted patents
- 13
- Published applications
- 0
- Assignees
- 7
- Inventors
- 19
- Latest grant
- 2 Jul 2002
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Restricted operating modes for oil primary2 Jul 2002US 6,413,078 B1Honeywell International Inc.
- Pot type oil burner with unnoticeable bad odor21 May 2002US 6,390,807 B1
- Hot surface ignition controller for fuel oil burner22 Oct 1996US 5,567,144 ADESA International, Inc.
- 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
No published applications in this class yet.
Most cited
By later US patents
- System for time programming of states by communicating time data via a continuously rotatable potentiometer153US 4,837,731 AHoneywell Inc. · 1989
- Burner control system19US 4,243,372 AElectronics Corporation of America · 1981
- Fuel burner control apparatus16US 4,298,335 AWalter Kidde & Company, Inc. · 1981
- Burner control apparatus with stabilized pilot flame timing interval13US 4,249,884 AElectronics Corporation of America · 1981
- Burner control apparatus12US 4,137,035 AElectronics Corporation of America · 1979