H01J 31/24
With screen acting as light valve by shutter operation
Official title: with screen acting as light valve by shutter operation, e.g. eidophor {(projection arrangements for image reproduction, e.g. using eidophor H04N5/74)}
H01J31/24 (With screen acting as light valve by shutter operation) appears on 6 US grants and 0 published applications in this corpus.
Search patents in H01J- Granted patents
- 6
- Published applications
- 0
- Assignees
- 3
- Inventors
- 5
- Latest grant
- 9 Apr 2002
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 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 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Electron gun for addressing secondary emission targets9 Apr 2002US 6,369,498 B1Intel Corporation
- High spatial resolution 2-D bistable light modulator25 Jul 1989US 4,851,659 AOptron Systems, Inc.
- Low-cost, substantially cross-talk free high spatial resolution 2-D bistable light modulator18 Apr 1989US 4,822,993 AOptron Systems, Inc.
- Completely cross-talk free high spatial resolution 2D bistable light modulation24 Jan 1989US 4,800,263 AOptron Systems, Inc.
- Masking of light valve spill light5 Jul 1988US 4,755,032 AGeneral Electric Company
No published applications in this class yet.
Most cited
By later US patents
- Low-cost, substantially cross-talk free high spatial resolution 2-D bistable light modulator54US 4,822,993 AOptron Systems, Inc. · 1989
- Completely cross-talk free high spatial resolution 2D bistable light modulation8US 4,800,263 AOptron Systems, Inc. · 1989
- High spatial resolution 2-D bistable light modulator5US 4,851,659 AOptron Systems, Inc. · 1989
- Split drift ring for focus deflection in light valves1US 4,716,339 AGeneral Electric Company · 1987
- Masking of light valve spill light1US 4,755,032 AGeneral Electric Company · 1988