Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849564 | Finely divided silicone rubber additive material and method for producing same | Koji Shimizu, Katsuyoshi Nakasuji | 1989-07-18 |
| 4842943 | Unitary molded silicone rubber product from two different silicone rubbers and a method for their manufacture | Hideki Kobayashi, Hiroshi Honma | 1989-06-27 |
| 4824616 | Method for the production of spherical silicone gel particles | Koji Shimizu | 1989-04-25 |