Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6606574 | Quality control method for product production apparatus | — | 2003-08-12 |
| 5703780 | Navigation system | Ichiro Tanaka | 1997-12-30 |
| 5359527 | Navigation system for vehicle | Hiroaki Ideno, Shuichi Nishikawa | 1994-10-25 |