Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849022 | Method for modifying the surface of finely divided silica | Masayuki Ohnishi | 1989-07-18 |
| 4845004 | Fluidity improver for positively-charging resin powder | — | 1989-07-04 |
| 4842943 | Unitary molded silicone rubber product from two different silicone rubbers and a method for their manufacture | Hiroshi Honma, Mitsuo Hamada | 1989-06-27 |
| 4840873 | Production of optical recording medium | Minoru Ikeda, Koichi Saito, Shiro Nagata, Koichi Horino | 1989-06-20 |
| 4827691 | Machine for filling containers with rod-shaped objects | Mikio Hanada | 1989-05-09 |
| 4816841 | Optical recording medium | Minoru Ikeda, Koichi Saito, Shiro Nagata, Koichi Horino | 1989-03-28 |