Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5279688 | Steel shaft material which is capable of being directly cut and induction hardened and a method for manufacturing the same | Sadayuki Nakamura, Toshimitsu Fujii | 1994-01-18 |
| 4773947 | Manufacturing process for high temperature carburized case harden steel | Kimihiro Shibata, Masahide Ike, Katsunori Takada | 1988-09-27 |
| 4634573 | Steel for cold forging and method of making | Toshio Yanagiya, Hisashi Ohta, Hideaki Inaba | 1987-01-06 |
| 4584032 | Bolting bar material and a method of producing the same | Kunio Namiki, Kenji Takahashi | 1986-04-22 |