Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5252658 | Pigment-containing premixture of titanium dioxide with olefin polymer | Ralf-Burkhard Dethlefs, Bernd Scholz | 1993-10-12 |
| 5049595 | Plastic concentrate for photographic support material coatings | Ralf-Burkhard Dethlefs, Bernd Scholz | 1991-09-17 |
| 5004644 | Support material for photographic coatings | Ralf-Burkhard Dethlefs, Bernd Scholz, Elke Miefert | 1991-04-02 |
| 4935298 | Water-resistant support material for light-sensitive materials | Ralf-Burkhard Dethlefs, Bernd Scholz | 1990-06-19 |
| 4898773 | Photographic paper support with a water resistant coating of polyethylene | Ralf-Burkhard Dethlefs, Bernd Scholz | 1990-02-06 |
| 4895757 | Photographic paper support manufacture | Bernd Scholz, Ralf-Burckhard Dethlefs | 1990-01-23 |
| 4396671 | White photographic paper support and method of producing same | Rudolph Wanka, Heinz Wilke, Uwe Jensen | 1983-08-02 |