Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6350563 | Photographic black-and-white reversal first developer | Ralf Wichmann | 2002-02-26 |
| 5989790 | Process for the production of archival silver images | — | 1999-11-23 |
| 5952159 | Method of photographic processing | — | 1999-09-14 |
| 5734946 | Processing device for photographic materials | — | 1998-03-31 |
| 5716767 | Bleaching bath for photographic black-&-white material | Ralf Wichmann | 1998-02-10 |
| 5537179 | Device and process for the rapid washing of photographic material | Egon Bachem | 1996-07-16 |
| 5430521 | Device for the development of photographic silver halide material | — | 1995-07-04 |
| 5392087 | Apparatus for processing photographic materials | — | 1995-02-21 |
| 5369458 | Liquid stripper for photographic material | Viktor Osegowitsch, Gunter Rockle | 1994-11-29 |
| 5365300 | Method for processing photographic materials | Viktor Osegowitsch, Wilfried Hehn | 1994-11-15 |
| 5334492 | Photographic processing method and apparatus | Werner Went | 1994-08-02 |
| 5327189 | Device for developing photographic film bases | — | 1994-07-05 |
| 5239328 | Machine for developing photographic material | Gunther Schnall, Gunter Rockle | 1993-08-24 |
| 5210008 | Photographic process | Egon Bachem | 1993-05-11 |
| 5168297 | Countercurrent final treatment system | — | 1992-12-01 |
| 5135841 | Process for the production of color photographic copies | Herbert Mitzinger, Udo Quilitzsch | 1992-08-04 |
| 5110715 | Photographic reversal process | Werner Berthold, Helmut Haseler, Gustav Tappe | 1992-05-05 |
| 5063144 | Photographic color developer solution and a process for the development of a color photographic material | — | 1991-11-05 |
| 5006439 | Photographic reversal process using a color developing agent in the black-and-white developer | Herbert Mitzinger | 1991-04-09 |
| 4997749 | Overflow-free color photographic development system | Herbert Mitzinger | 1991-03-05 |
| 4925778 | Process for the rapid development of color materials | — | 1990-05-15 |
| 4710454 | Photographic recording material and a process for the production of photographic images | Hans Langen, Heinz-Dieter Schutz, Wolfgang Himmelmann, Gunter Renner | 1987-12-01 |
| 4680123 | Regeneration of spent developers | Heinz Meckl, Hans-Gunter Donner, Jurgen Frosch | 1987-07-14 |
| 4632763 | Process for treating photographic washing waters | Heinz Meckl | 1986-12-30 |
| 4348475 | Process for the production of photographic images | Heinz Meckl | 1982-09-07 |