Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816364 | Magnetic carrier particles for electrophotographic developer having plated layer of iron oxide | Masao Oishi, Takao Saito, Katsukiyo Ishikawa, Eio Hisajima | 1989-03-28 |
| 4639099 | Optical instrument | Kazuto Tanaka, Haruo Kakizawa | 1987-01-27 |