Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9422613 | Case hardened steel having reduced thermal treatment distortion | Masahiko Doe | 2016-08-23 |
| 8137484 | Method of production of steel superior in machinability | Masayuki Hashimura, Atsushi Mizuno, Kenichiro Naito, Hiroshi Hagiwara, Hiroshi Hirata | 2012-03-20 |
| 7488396 | Superior in machinability and method of production of same | Masayuki Hashimura, Atsushi Mizuno, Kenichiro Naito, Hiroshi Hagiwara, Hiroshi Hirata | 2009-02-10 |
| 6858101 | Steel excellent in forgeability and machinability | Masayuki Hashimura, Hiroshi Hirata, Ken Naito, Kenji Fukuyasu | 2005-02-22 |