Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5693135 | Interference pigments containing reduced titanium oxide layers for preparing forgeryproof documents and packaging | Raimund Schmid, Norbert Mronga, Claus Kaliba, Werner Ostertag | 1997-12-02 |
| 5644014 | Coating compositions based on fluorine-containing inorganic polycondensates, their production and their use | Reiner Kasemann, Stefan Bruck | 1997-07-01 |
| 5624487 | Preparation of bluish luster pigments | Werner Ostertag, Hermann Bidlingmaier, Norbert Mronga, Juan Antonio Gonzalez Gomez, Claus Kaliba +2 more | 1997-04-29 |
| 5593781 | Method of manufacturing surface-modified ceramic powders with particles in the nanometer size | Rudiger Nass, Peter Schmitt | 1997-01-14 |