Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4984751 | Spool for strip-form recording substrates, in particular for photographic films | Franz Hoffacker, Hermann Luhrig | 1991-01-15 |
| 4537486 | Apparatus for the exposure and development of photographic images | Immo Boie, Hermann Luhrig | 1985-08-27 |
| 4532201 | Process and an apparatus for the development of photographic two-sheet diffusion materials | Immo Boie | 1985-07-30 |
| 4508809 | Process for the exposure and development of photo-graphic images and an apparatus for carrying out the process | Immo Boie, Hermann Luhrig | 1985-04-02 |
| 4506843 | Double-hooked spool | Hermann Luhrig | 1985-03-26 |
| 4486085 | Apparatus for developing color-photographic images in etching alkaline solutions according to the color diffusion process | Immo Boie, Victor Osegowitsch | 1984-12-04 |
| 4399212 | Method of processing an exposed photographic material and processing band for carrying out the method | Immo Boie, Hermann Luhrig, Karlheinz Keller | 1983-08-16 |
| 4395107 | Film cassette | Hermann Luhrig, Franz Hoffacker, Dieter Engelsmann, Siegfried Zobel, Hubert Hackenberg +1 more | 1983-07-26 |
| 4381891 | Film cassette for several strip films | Franz Hoffacker, Hermann Luhrig | 1983-05-03 |
| 4380382 | Film cassette for a photosensitive film strip | Dieter Engelsmann, Franz Hoffacker, Peter Lermann, Hermann Luhrig, Karl Wagner | 1983-04-19 |
| 4264718 | Photographic film unit of integral structure | Hermann Luhrig, Walter Tabel, Horst-Peter Muller | 1981-04-28 |
| 4242443 | Photographic film unit with integral structure | Hermann Luhrig, Horst-Peter Muller | 1980-12-30 |