Issued Patents All Time
Showing 1–25 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6451520 | Color photographic silver halide material | Hans Langen, Uwe Dahlhaus | 2002-09-17 |
| 6403296 | Color photographic silver halide material | Jorg Hagemann, Markus Geiger | 2002-06-11 |
| 6348293 | Radiographic film material exhibiting increased covering power and “colder” blue-black image tone | Ann Verbeeck, Johan Loccufier, Govert De Baecke, Freddy Henderickx | 2002-02-19 |
| 6261758 | Production of silver halide emulsions | Ralf Wirowski, Hans-Ulrich Borst, Detlev Kapitza, Jorg Siegel, Peter Bergthaller | 2001-07-17 |
| 6221572 | Color photographic material | Jorg Hagemann, Gunter Helling | 2001-04-24 |
| 6013428 | Color photographic recording material having a 2-equivalent magenta coupler and a white coupler | Hans Langen, Uwe Dahlhaus | 2000-01-11 |
| 5981160 | Color photographic silver halide material | Hans Langen, Jorg Hagemann, Klaus Henseler | 1999-11-09 |
| 5922524 | Colour photographic recording material | Ralf Buscher, Peter Bell, Hans-Ulrich Borst, Jorg Siegel, Johannes Willsau | 1999-07-13 |
| 5702877 | Color photographic silver halide material | Hans Langen, Uwe Dahlhaus, Heinz-Dieter Schutz | 1997-12-30 |
| 5622817 | Color photographic recording material | Johannes Willsau | 1997-04-22 |
| 5441857 | Color photographic recording material | Peter Bell, Johannes Willsau | 1995-08-15 |
| 5407789 | Photographic recording material | Hans hlschlager, Thomas Stetzer | 1995-04-18 |
| 5306605 | Photographic recording material | Lothar Rosenhahn, Thomas Stetzer | 1994-04-26 |
| 5266449 | Bleaching bath | Christa Dacke, Hans Langen | 1993-11-30 |
| 5215875 | Color photographic recording material | Reinhart Matejec, Hans Vetter | 1993-06-01 |
| 5200306 | Color photographic recording material containing a coupler which releases a photographically active compound | Hans Vetter, Peter Bergthaller, Dirk Hubner | 1993-04-06 |
| 5158864 | Color photographic material | Reinhart Matejec, Erich Wolff, Hans hlschlager | 1992-10-27 |
| 5035987 | Color photographic recording material containing a DIR coupler | Thomas Krüger, Hans-Joachim Schumann | 1991-07-30 |
| 5021331 | Color photographic recording material containing a DIR coupler | Hans Vetter, Peter Bergthaller, Thomas Krüger | 1991-06-04 |
| 5021332 | Color photographic recording material containing a DIR coupler | Peter Bergthaller, Thomas Krüger, Hans Vetter | 1991-06-04 |
| 5006457 | Photographic recording material | Hans Vetter, Hans hlschlager, Bernhard Morcher, Friedhelm Sommer, Lothar Rosenhahn | 1991-04-09 |
| 4985351 | Photographic recording material | Reinhart Matejec, Hans hlschlager, Erich Wolff | 1991-01-15 |
| 4897341 | Color photographic recording material containing a dir-coupler | Hans Ohlschlager, Friedrich-Wilhelm Kunitz, Dirk Hubner | 1990-01-30 |
| 4840880 | Color photographic recording material containing a yellow DIR coupler | Hans Ohlschlager, Gunter Renner, Friedrich-Wilhelm Kunitz, Dirk Hubner | 1989-06-20 |
| 4833070 | Color photographic recording material containing a yellow DIR coupler | Friedrich-Wilhelm Kunitz, Hans hlschlager, Dirk Hubner | 1989-05-23 |