Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863472 | Bone graft implant | Pentti Rokkanen, Valle J. Oikarinen, Seppo Vainionpaa, Pertti Helevirta | 1989-09-05 |
| 4829097 | Process for the preparation of an isocyanurate modified polyurethane foam and the resulting foam | Timo Pohjonen, Aimo Ihanamaki, Eero Jormalainen, Kauko Linna | 1989-05-09 |