Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7475845 | Axial bearing for a banding roll | Alois Tanner | 2009-01-13 |
| 4832740 | Process for removing alkali and alkaline earth elements from aluminum melts | — | 1989-05-23 |
| 4565239 | Apparatus for screening a stream of molten metal | — | 1986-01-21 |
| 4480771 | Rotary nozzle system for metallurgical vessels | — | 1984-11-06 |
| 4371604 | Photographic material suited for use in diffusion transfer photography | Christian C. Van de Sande, Wilhelmus Janssens, Wolfgang Lassig | 1983-02-01 |
| 4366240 | Color photographic recording material containing non-diffusing electron donor precursor compounds | Wolfgang Lassig, Siegfried Schleger | 1982-12-28 |
| 4275200 | Process for the production of oxazolinone-2-compounds | Fritz Benker, Hans-Heinrich Credner, Wolfgang Lassig, Siegfried Schleger | 1981-06-23 |
| 4265379 | Closure element of a slide closure for use in liquid melt containers | — | 1981-05-05 |
| 4219188 | Slide valve for the injection of material for use in the outlet of a metallurgical vessel | — | 1980-08-26 |
| 4204867 | Process for the production of color photographic images using new white coupler substances | Karl Kuffner, Wolfgang Lassig, Immo Boie, Gertrud Kirchhoff, Helmut Haseler +1 more | 1980-05-27 |
| 4183752 | Light-sensitive photographic material | Karl Kuffner, Wolfgang Lassig, Erwin Ranz, Karl-Wilhelm Schranz | 1980-01-15 |