Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4802021 | Recording and/or reproducing apparatus using opto-magnetic disc | Shozo Makagawa, Akihiro Takagi | 1989-01-31 |
| 4389623 | Automatic equalizer ulitizing a preiodically contained reference signal | Masaharu Obara, Masaru Sakurai, Junzo Murakami, Shinichi Makino | 1983-06-21 |