Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4618468 | Method for controlling bead size in the production of expandable styrene polymers by suspension polymerization | Josef K. Rigler | 1986-10-21 |
| 4609512 | Process for controlling bead size in the manufacture of expandable styrene polymers by suspension polymerization | Josef K. Rigler, Dirk A. Reese | 1986-09-02 |
| 4495224 | Method for preparing improved molding materials from coated fine particulate expandable styrene polymers and application of the coated products | Josef K. Rigler, Heinz Osterhoff | 1985-01-22 |
| 4419458 | Fire retardant fine particulate expandable styrene polymers | Josef K. Rigler, Ekkehard Wienhofer, Karl Trukenbrod | 1983-12-06 |
| 4418156 | Fire retardant fine particulate expandable styrene polymers | Josef K. Rigler, Ekkehard Wienhofer, Karl Trukenbrod | 1983-11-29 |
| 4407977 | Fire retardant particulate expandable styrene polymers | Josef K. Rigler, Ekkehard Wienhofer, Karl Trukenbrod | 1983-10-04 |
| 4393146 | Fire retardant fine particulate expandable styrene polymers | Josef K. Rigler, Ekkehard Wienhofer, Karl Trukenbrod | 1983-07-12 |
| 4337319 | Self-extinguishing, fine particulate expandable styrene polymers | Josef K. Rigler, Hans-Josef Ratajczak, Karl Trukenbrod | 1982-06-29 |
| 4286071 | Self-extinguishing fine particulate expandable styrene polymers | Josef K. Rigler, Hans-Josef Ratajczak, Karl Trukenbrod | 1981-08-25 |
| 4281036 | Method for coating fine particulate expandable styrene polymers | Heinz Osterhoff, Karl Trukenbrod | 1981-07-28 |
| 4255525 | Small particulate expandable styrene polymer molding compositions | Josef K. Rigler, Wolfgang Schafer, Karl Trukenbrod, Werner Bollmann | 1981-03-10 |
| 4228244 | Process for preparing fine particle expandable styrene polymers containing small concentrations of organic bromine compounds | Josef K. Rigler, Karl Trukenbrod, Werner Ogrzewalla | 1980-10-14 |