Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5098489 | Process for manufacturing high-strength parts of an automobile transmission system | Tsunahiro Yamakawa, Satoru Nito, Hiroyoshi Yamakawa, Ichiro Kokubo, Masakatsu Hata | 1992-03-24 |
| 4851054 | Method of producing rolled steel having excellent resistance to sulfide stress corrosion cracking | Toshio Fukuzuka, Kazutoshi Shimogori, Yasushi Torii, Kohjiro Kitahata | 1989-07-25 |