Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8277574 | Method for manufacturing grain-oriented electromagnetic steel sheet whose magnetic domains are controlled by laser beam irradiation | Tatsuhiko Sakai, Masao Yabumoto | 2012-10-02 |
| 8034196 | Low core loss grain-oriented electrical steel plate and method of manufacturing the same | Keiji Iwata | 2011-10-11 |
| 8016951 | Low core loss grain-oriented electrical steel sheet and method for producing the same | Satoshi Arai, Tatsuhiko Sakai, Kaoru Sato, Hideyuki Kobayashi | 2011-09-13 |
| 7883586 | Method for production and apparatus for production of grain-oriented electrical steel sheet excellent in magnetic properties | Tatsuhiko Sakai | 2011-02-08 |
| 7763120 | Method of production of grain-oriented electrical steel sheet | Tatsuhiko Sakai | 2010-07-27 |
| 7442260 | Grain-oriented electrical steel sheet superior in electrical characteristics and method of production of same | Tatsuhiko Sakai, Naoya Hamada | 2008-10-28 |
| 7230968 | Semiconductor laser device and solid-state laser device using same | Hirofumi Imai, Naoya Hamada, Motoi Kido, Tatsuhiko Sakai, Atsushi Sugihashi +1 more | 2007-06-12 |
| 7045025 | Grain-oriented electrical steel sheet excellent in magnetic properties and method for producing the same | Tatsuhiko Sakai, Naoya Hamada | 2006-05-16 |