Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7933710 | Abnormality diagnosis device of internal combustion engine | Toshihiko Tanaka, Hiroshi Yamashita | 2011-04-26 |
| 4698948 | Furnace wall construction for industrial use | Mitsuo Yamashita | 1987-10-13 |