Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4591396 | Method of producing steel having high strength and toughness | Hiroshi Tamehiro, Mamoru Ohashi, Yasumitsu Onoe, Shinogu Tamukai | 1986-05-27 |
| 4521258 | Method of making wrought high tension steel having superior low temperature toughness | Hiroshi Tamehiro, Mamoru Ohashi, Yasumitsu Onoe | 1985-06-04 |