F21K 5/00
Light sources using charges of combustible material
Official title: Light sources using charges of combustible material, e.g. illuminating flash devices
F21K5/00 (Light sources using charges of combustible material) appears on 116 US grants and 0 published applications in this corpus.
Search patents in F21K- Granted patents
- 116
- Published applications
- 0
- Assignees
- 13
- Inventors
- 103
- Latest grant
- 30 Nov 1999
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 22 | 0 |
| 1977 | 17 | 0 |
| 1978 | 13 | 0 |
| 1979 | 5 | 0 |
| 1980 | 14 | 0 |
| 1981 | 7 | 0 |
| 1982 | 9 | 0 |
| 1983 | 8 | 0 |
| 1984 | 5 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Enclosed frictionally ignited photographic flash lamp30 Nov 1999US 5,993,201 AEastman Kodak Company
- High efficiency photographic flash lamp23 Nov 1999US 5,989,016 AEastman Kodak Company
- Photoflash unit6 Apr 1999US 5,892,992 AEastman Kodak Company
- Flash lamp array with porous vent16 Feb 1999US 5,871,344 AEastman Kodak Company
- Percussively fired flash lamp array16 Feb 1999US 5,871,345 AEastman Kodak Company
No published applications in this class yet.
Most cited
By later US patents
- Damage-preventive coatings38US 4,198,200 ALord Corporation · 1980
- Photoflash lamp37US 4,045,156 AGTE Sylvania Incorporated · 1977
- Multi-lamp flash wheel and camera28US 5,649,242 AEastman Kodak Company · 1997
- Flashlamp containment coating25US 4,341,817 AGTE Products Corporation · 1982
- Photoflash lamp17US 4,059,388 AGTE Sylvania Incorporated · 1977