Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7791805 | Multifocal lens array and three-dimensional stereoscopic image display apparatus | — | 2010-09-07 |
| 7412725 | Copyright protection system, digital information processing apparatus and copyright protection method | — | 2008-08-12 |
| 7406605 | Information recording medium, manufacturing method of its recording medium, information process unit and copyright management system | — | 2008-07-29 |
| 6770388 | Perpendicular magnetic recording medium | Hiroyuki Uwazumi | 2004-08-03 |
| 6579613 | Recording medium with limited using period | Hiroyuki Uwazumi | 2003-06-17 |
| 6001479 | Magnetic recording medium and method for manufacturing the same | Shinji Shirai, Katsuya Masuda, Yoichi Tei, Mihoyo Iwase | 1999-12-14 |