Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7715300 | Diffraction element, objective lens unit, optical pickup and optical disc apparatus | Satoshi Kawakita, Motoo Aiba, Jin Sato, Takatoshi Yamada | 2010-05-11 |
| 7463430 | Diffraction element, objective lens unit, optical pickup, optical disc apparatus and design method for diffraction element | Takatoshi Yamada, Satoshi Kawakita, Jin Sato, Motoo Aiba | 2008-12-09 |
| 7192153 | Lens, light irradiation apparatus, and laser pointer | Masayoshi Aoshima | 2007-03-20 |
| 6801390 | Stationary head type magnetic recording/reproducing system with flat and bevel slide contact surfaces on transducig head | Yasuo Sugizaki | 2004-10-05 |
| 6014291 | Composite magnetic head having thin conductor film | Makoto Watanabe, Seiichi Ogata, Yoshito Ikeda | 2000-01-11 |
| 5936815 | Magnetic head | Seiji Kumagai, Junichi Honda, Norikatsu Fujisawa | 1999-08-10 |
| 5909343 | Magnetic head and method for producing the same | Kumi TAKAHASHI, Toshinobu WATANABE, Shinji Takahashi, Tadashi Saito, Seiichi Ogata +2 more | 1999-06-01 |