Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5110574 | Precipitated silicas and process for their production and use | Adam Becker, Robert Kuhlmann, Peter Nauroth | 1992-05-05 |
| 4378995 | Iron blue pigment, process for making the same and use | Everhard Gratzfeld, Eva Clausen, Hans Schaefer | 1983-04-05 |
| 4368075 | Iron blue pigment, process for making the same and use | Everhard Gratzfeld, Eva Clausen, Hans Schaefer | 1983-01-11 |
| 4238322 | Apparatus for preparation of a sprayable precipitated silicic acid suspension | Bernd Brandt, Peter Nauroth, Albert Peters | 1980-12-09 |
| 4224295 | Process for the production of finely divided silicic acid by spray drying | Bernd Brandt, Peter Nauroth, Albert Peters | 1980-09-23 |