Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4802061 | Microelectronic components and thick-film hybrid circuits | Michael Portugall, Hans-Josef Sterzel, Gerd Blinne, Heinz-Dieter Vondenhagen, Erhard Seiler +1 more | 1989-01-31 |
| 4655964 | Conductive nylon molding materials | Rolf Steinberger, Johannes Schlag, Karl Schlichting, Erhard Seiler, Sibylle Von Tomkewitsch | 1987-04-07 |
| 4548740 | Method of producing conductive plastics | Sybille Von Tomkewitsch | 1985-10-22 |
| 4482683 | Stabilized sulfur-containing resins, such as polyphenylene sulfide and method of producing the same | Ferdinand Quella | 1984-11-13 |
| 4447581 | Stabilized sulfur-containing resins, such as polyphenylene sulfide and method of producing same | Ferdinand Quella | 1984-05-08 |
| 4426368 | Method of producing glass carbon | Ferdinand Quella | 1984-01-17 |