Issued Patents 2017
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9845519 | Boron-added high strength steel for bolt and high strength bolt having excellent delayed fracture resistance | Yosuke Matsumoto, Atsushi INADA | 2017-12-19 |
| 9835194 | Steel wire for bolt, bolt, and manufacturing processes therefor | Yousuke Matsumoto, Ichiro Sugita, Masaru Tanimoto | 2017-12-05 |
| 9695488 | Steel for bolt use, bolt, and method for manufacturing bolt | Yosuke Matsumoto, Atsushi INADA | 2017-07-04 |