Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9540704 | Method of making quenched and tempered steel pipe with high fatigue life | Masaru Fujihara | 2017-01-10 |
| 7501029 | High-strength, high-permeability steel sheet for picture tube band and method of producing the same | Kentaro Hirata, Yuichi Higo | 2009-03-10 |
| 5294271 | Heat treatment for manufacturing spring steel excellent in high-temperature relaxation resistance | Tomoyoshi Iwao, Teruo Tanaka, Toshiro Yamada | 1994-03-15 |