Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5860055 | Process for producing granular material and shaped parts from hard metal materials or cermet materials | Werner Hesse | 1999-01-12 |
| 5188782 | Production of preforms from ceramic or metallic fibers | Johan ter Maat, Hans-Josef Sterzel | 1993-02-23 |
| 4557818 | Gas-evolving metal electrode | Hans Roos, Dieter Schlaefer, Hugo Boehn, Heinz Kilthau | 1985-12-10 |
| 4455174 | Yellow pigment containing bismuth vanadate and having the composition BiVO.sub.4.xBi.sub.2 MoO.sub.6.yBi.sub.2 WO.sub.6 | Henning Wienand, Werner Ostertag | 1984-06-19 |
| 4422921 | Bipolar electrodes with graphite as the carrier and their production | Hans Roos, Hugo Boehn, Dieter Schlaefer | 1983-12-27 |
| 4411761 | Spinel-containing electrode and process for its production | Hans Roos, Hugo Boehn, Volker Kiener, Gerd Wunsch | 1983-10-25 |
| 4344987 | Preparation of flaky mica pigments coated with metal oxides, and use of these pigments | Werner Ostertag, Gustav Bock | 1982-08-17 |
| 4328042 | Preparation of metallic pigments having a metallic luster | Werner Ostertag, Gustav Bock | 1982-05-04 |