Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4810450 | Process for the preparation of polyvinyl alcohol articles of high strength and modulus | Ronald M. A. M. Schellekens, Pieter J. Lemstra | 1989-03-07 |
| 4810570 | Polyolefin foams having open and/or closed pores and consisting of polyolefins of ultrahigh molecular weight, process for their production, and their use | Pieter B. Pluyter | 1989-03-07 |