Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853417 | Process for manufacturing rigid polyurethane foam | Eckehard Weigand, Yoshinori Kihara | 1989-08-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853417 | Process for manufacturing rigid polyurethane foam | Eckehard Weigand, Yoshinori Kihara | 1989-08-01 |