Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879100 | Corona discharge treatment apparatus | Shoji Ikeda, Koji Ueki | 1989-11-07 |
| 4867573 | Powder treating method and apparatus used therefor | Shoji Ikeda, Koji Nishizawa, Makoto Yagi, Nobuaki Kubo | 1989-09-19 |
| 4853436 | Graft polymerization of substituted styrene polymers having pendant vinylidene groups | Masatoshi Ohata | 1989-08-01 |