Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5247025 | Multistage graft copolymer and its use for the preparation of transparent PVC molding materials | Hans-Helmut Goertz, Werner Oschmann | 1993-09-21 |
| 4614604 | Lubricants for shaping polyvinyl chloride, which contain esterified oligomeric polyhydric alcohols | Herbert Helfert, Wolf-Dieter Balzer, Wolfram Dietsche, Albert Hettche, Stefan Weiss | 1986-09-30 |