VEB Pentacon Dresden
14Patents
0Active
14Granted
26Portfolio score
Filing activity: Jun 3, 1974 → Aug 25, 1975
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3947112A | Device for document filming | Physics | 16 | Expired |
| US3992203A | Polyphenylenevinylene photoconductor composition sensitized with a 1,4-bis (styryl) benzene derivative | Physics | 10 | Expired |
| US4015903A | Microfilm camera apparatus | Physics | 5 | Expired |
| US3966470A | Photo-conductive coating containing Ge, S, and Pb or Sn | Physics | 4 | Expired |
| US3966320A | Microfilm camera | Physics | 3 | Expired |
| US3969740A | Film cassette | Physics | 3 | Expired |
| US3997904A | Camera circuit arrangement for the pre-indication of exposure time | Physics | 2 | Expired |
| US3944154A | Film cassette | Physics | 2 | Expired |
| US4040111A | Camera automatic exposure control apparatus | Physics | 1 | Expired |
| US3996597A | Photographic cartridge camera | Physics | 1 | Expired |
| US3940781A | Camera diaphragm drive apparatus | Physics | 1 | Expired |
| US3963346A | Microfilm cameras | Physics | 1 | Expired |
| US3995297A | Film cassette | Physics | 0 | Expired |
| US3946412A | Photographic camera having electric motor drive for shutter cocking and film winding | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.