Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5681876 | Pulverulent pigment preparation | Dieter Schnaitmann, Rainer Klein, Albert Munkel | 1997-10-28 |
| 5645636 | Pasty pigment preparations, preparation thereof and use thereof | Rainer Schunck, Dieter Schnaitmann, Udo Brost | 1997-07-08 |
| 5614643 | Process for the enzymatic production of isomerically pure isosorbide-2 and 5-monoesters as well as their conversion into isosorbide-2- and 5-nitrate | Robert Seemayer | 1997-03-25 |
| 5598629 | Process for making contact with a silver contact base | Dietmar Clauss | 1997-02-04 |