Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4967027 | Method of inhibiting polymerization of styrenes | Hideyuki Takahashi, Shohei Suzuki, Tomohiko Takahama, Tadamichi Aoki, Yoshikazu Higaki | 1990-10-30 |
| 4497911 | Production of fine particulate, expandable styrene polymers with improved properties | Josef K. Rigler, Franz-Michael Bollenrath | 1985-02-05 |
| 4419458 | Fire retardant fine particulate expandable styrene polymers | Josef K. Rigler, Ekkehard Wienhofer, Horst Leithauser | 1983-12-06 |
| 4418156 | Fire retardant fine particulate expandable styrene polymers | Josef K. Rigler, Ekkehard Wienhofer, Horst Leithauser | 1983-11-29 |
| 4407977 | Fire retardant particulate expandable styrene polymers | Josef K. Rigler, Ekkehard Wienhofer, Horst Leithauser | 1983-10-04 |
| 4393146 | Fire retardant fine particulate expandable styrene polymers | Josef K. Rigler, Ekkehard Wienhofer, Horst Leithauser | 1983-07-12 |
| 4337319 | Self-extinguishing, fine particulate expandable styrene polymers | Josef K. Rigler, Hans-Josef Ratajczak, Horst Leithauser | 1982-06-29 |
| 4286071 | Self-extinguishing fine particulate expandable styrene polymers | Josef K. Rigler, Hans-Josef Ratajczak, Horst Leithauser | 1981-08-25 |
| 4281036 | Method for coating fine particulate expandable styrene polymers | Horst Leithauser, Heinz Osterhoff | 1981-07-28 |
| 4255525 | Small particulate expandable styrene polymer molding compositions | Josef K. Rigler, Wolfgang Schafer, Horst Leithauser, Werner Bollmann | 1981-03-10 |
| 4228244 | Process for preparing fine particle expandable styrene polymers containing small concentrations of organic bromine compounds | Josef K. Rigler, Horst Leithauser, Werner Ogrzewalla | 1980-10-14 |