Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5258974 | Optical read-out audio check disc with semitransparent defects or with single recorded tone | Noriyuki Ishimura | 1993-11-02 |
| D318123 | Medical tube fastener | Osamu Yokono | 1991-07-09 |