Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7488118 | Optical coupling element and optical coupling unit | — | 2009-02-10 |
| 6233112 | Magnetic recording/regenerating apparatus | Masao Ohkita, Mikio Oka | 2001-05-15 |
| 6233113 | Magnetic recording/regenerating apparatus | Masao Ohkita, Mikio Oka | 2001-05-15 |
| 6188541 | Magnetic recording-reproducing device | Masao Ohkita, Mikio Oka | 2001-02-13 |