Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6601987 | Apparatus for premixing additives and feeding them into a polymer stream | Bernd Helmstorff | 2003-08-05 |
| 6313200 | Process for feeding additives into a polymer melt stream | — | 2001-11-06 |