Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5098489 | Process for manufacturing high-strength parts of an automobile transmission system | Tsunahiro Yamakawa, Hiroyoshi Yamakawa, Ichiro Kokubo, Takuo Hosoda, Masakatsu Hata | 1992-03-24 |