Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4671672 | Universal time clock | — | 1987-06-09 |
| 4609297 | Print and correction ribbon drive system | Wilfried Rettke | 1986-09-02 |
| 4425360 | Pharmacologically active novel O-substituted pyruvic acid oximes | Hans-Peter Wolff, Ruth Heerdt, Hans-Frieder Kuhnle, Felix Helmut Schmidt | 1984-01-10 |
| 4310251 | Continuous mixer internal pressure control | Hans R. Scharer, Dominic A. D'Amato, Peter Hold | 1982-01-12 |
| 4278680 | Hypoglycaemically and hypolipidaemically active derivatives of phenylacetic acid | Hans-Frieder Kuhnle, Ernst-Christian Witte, Ruth Heerdt, Rudi Weyer, Volker Hitzel | 1981-07-14 |
| 4207341 | Hypoglycaemically and hypolipidaemically active derivatives of phenylacetic acid | Hans-Frieder Kuhnle, Ernst-Christian Witte, Ruth Heerdt, Rudi Weyer, Volker Hitzel | 1980-06-10 |
| 4206231 | Hypoglycaemically active 2-alkyl- or -alkenyl-hydrazono propionic acid derivatives | Rainer Haeckel, Michael Oellerich, Ruth Heerdt, Felix Helmut Schmidt | 1980-06-03 |