B41B 21/16
Optical systems
Official title: Optical systems (shutters B41B21/02; light sources B41B21/08)
B41B21/16 (Optical systems) appears on 39 US grants and 0 published applications in this corpus.
Search patents in B41B- Granted patents
- 39
- Published applications
- 0
- Assignees
- 17
- Inventors
- 43
- Latest grant
- 12 Mar 2002
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 5 | 0 |
| 1979 | 5 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 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 | 1 | 0 |
| 1997 | 1 | 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.
Subgroups
Granted patents
Recent patents
- Method and apparatus for illumination of light-sensitive materials12 Mar 2002US 6,356,342 B1Purup-Eskofot A/S
- Apparatus and method for exposing data characters onto a strip region of moving photosensitive media8 Jul 1997US 5,646,713 AEastman Kodak Company
- Internal drum plotter with multiple focal point holographic optical element5 Mar 1996US 5,497,252 AScitex Corporation Ltd.
- Character imaging system17 Nov 1987US 4,707,711 ALumonics Inc.
- Flat bed optical scanning beam deflection system1 Sep 1987US 4,690,485 AAllied Corporation
No published applications in this class yet.
Most cited
By later US patents
- Phototypesetter100US 4,172,641 A1979
- Optical system for electro-optical scanner28US 4,305,646 AEltra Corporation · 1981
- Light absorption device for the prevention of stray light in particular in a phototypesetter27US 4,185,902 A1980
- Optical scanning apparatus17US 4,067,021 AThe Monotype Corporation Limited · 1978
- Apparatus and method for exposing data characters onto a strip region of moving photosensitive media15US 5,646,713 AEastman Kodak Company · 1997