Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE31251 | Process for producing a high tension steel sheet product having an excellent low-temperature toughness with a yield point of 40 kg/mm.sup.2 or higher | Hiroaki Masui, Hiroshi Tamehiro, Tetuo Takeda, Seiji Eiro | 1983-05-24 |
| 4219371 | Process for producing high-tension bainitic steel having high-toughness and excellent weldability | Masana Imagumbai, Hiroshi Tamehiro | 1980-08-26 |