Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873296 | Polyamide polyethylene glycolpolyamide block copolymer | Aldemaro Ciaperoni, Alberto Cappelli, Antonio Salan | 1989-10-10 |
| 4855099 | Single stage process for producing continuous polyester-based multifilament yarns at high speed | Fulvio Grampa | 1989-08-08 |