Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4596913 | Impeder for electric resistance tube welding | Mitsuo Yoshizawa, Hiroshi Nougata, Hirohisa Ichihara | 1986-06-24 |
| 4391653 | Process for producing cold rolled steel strip having excellent mechanical strength and useful for motor vehicles | Hiroshi Katoh, Kazuo Koyama, Kazuhide Usami | 1983-07-05 |
| 4376661 | Method of producing dual phase structure cold rolled steel sheet | Munetsugu Matsuo, Kazuo Koyama | 1983-03-15 |
| 4296919 | Apparatus for continuously producing a high strength dual-phase steel strip or sheet | Koichi Sakurai, Takashi Furukawa, Munetsugu Matsuo | 1981-10-27 |