Franz Hoffacker
12Patents
5h-index
25Co-inventors
62Inventor score
Filing activity: Oct 16, 1978 → Dec 19, 1991
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4407867A | Apparatus and a method for the completely automatic lacquering of strip-form materials | Physics | 24 | Expired |
| US4395107A | Film cassette | Physics | 14 | Expired |
| US4908048A | Apparatus for degassing liquids by centrifugal force in a frustum shaped body | Performing Operations; Transporting | 12 | Expired |
| US4984751A | Spool for strip-form recording substrates, in particular for photographic films | Physics | 8 | Expired |
| US4276324A | Method for the contact-free continuous measurement and monitoring of magnetic tracks on moving film strips | Physics | 6 | Expired |
| US4867815A | Process for the manufacture of film cartridges | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5153782A | Process for the coincident deflection of light of differing wavelengths | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4346668A | Apparatus for the contact-free continuous measurement and monitoring of magnetic tracks on moving film strips | Physics | 2 | Expired |
| US4189105A | Apparatus for winding a reel of film | Performing Operations; Transporting | 2 | Expired |
| US4380382A | Film cassette for a photosensitive film strip | Physics | 1 | Expired |
| US5098492A | Method for making film cassettes | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4381891A | Film cassette for several strip films | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.