H01J 29/12
Acting as light valves by shutter operation
Official title: acting as light valves by shutter operation, e.g. for eidophor
H01J29/12 (Acting as light valves by shutter operation) appears on 12 US grants and 0 published applications in this corpus.
Search patents in H01J- Granted patents
- 12
- Published applications
- 0
- Assignees
- 8
- Inventors
- 16
- Latest grant
- 13 Oct 1998
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 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 | 0 | 0 |
| 1998 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Reflective light valve modulator13 Oct 1998US 5,822,110 A
- Masking of light valve spill light5 Jul 1988US 4,755,032 AGeneral Electric Company
- Electrostatic precipitator for a light valve of the Schlieren dark field type5 Jul 1988US 4,755,034 AGeneral Electric Company
- Cathodochromic CRT erasure and tube set up method6 Oct 1987US 4,698,684 AHilliard-Lyons Patent Management, Inc.
- Light valve, light valve display, and method25 May 1982US 4,331,972 A
No published applications in this class yet.
Most cited
By later US patents
- Reflective light valve modulator85US 5,822,110 A1998
- Light valve, light valve display, and method47US 4,331,972 A1982
- Light modulating device12US 3,990,783 AMatsushita Electric Industrial Co., Ltd. · 1976
- Electro-mechanical image converter12US 4,229,081 AThe United States of America as represented by the Secretary of the Army · 1980
- Optical imaging system utilizing a light valve array and a coupled photoemissive target9US 3,989,890 AWestinghouse Electric Corp. · 1976