Issued Patents All Time
Showing 51–63 of 63 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8130614 | Optical storage medium, information recording apparatus, and information reproducing apparatus | Shin-ichi Kadowaki, Takashi Yumiba, Toyoji Gushima, Makoto Usui, Shin-ichi Tanaka +1 more | 2012-03-06 |
| 8090239 | Identification-information recording system, management unit, recording unit and recording control circuit | Makoto Usui, Toshihisa Nakano | 2012-01-03 |
| 8040785 | Optical disc, optical disc manufacturing method, optical disc recording device and optical disc reproduction device | Mamoru Shoji, Keiji Nishikiori, Makoto Usui, Mitsuro Moriya | 2011-10-18 |
| 8031869 | Information recording medium, usage management method, and usage management apparatus | Takashi Yumiba, Takahiro Nagai, Hideshi Ishihara | 2011-10-04 |
| 8027237 | Optical storage medium, information recording apparatus, and information reproducing apparatus | Shin-ichi Kadowaki, Takashi Yumiba, Toyoji Gushima, Makoto Usui, Shin-ichi Tanaka +1 more | 2011-09-27 |
| 7957253 | Multiple recording layers optical disc having physical position information of pre-recording marks | Mamoru Shoji, Kenji Kondo, Keiji Nishikiori | 2011-06-07 |
| 7869338 | Position detection device, position detection method, position detection control device, position detection control method, position detection control program, access authentication device, access authentication method, access authentication control device, access authentication control method, access authentication control program, information storage device, and optical disk | Harumitsu Miyashita, Toyoji Gushima, Akira Muto | 2011-01-11 |
| 7869328 | Optical disk and optical disk reproducing device | — | 2011-01-11 |
| 7649824 | Optical storage medium control data region | Shin-ichi Kadowaki, Takashi Yumiba, Toyoji Gushima, Makoto Usui, Shin-ichi Tanaka +1 more | 2010-01-19 |
| 7555205 | Method for controlling defect of optical disk, optical disk recording device, and optical disk reproducing device | Takashi Yumiba, Takahiro Nagai | 2009-06-30 |
| 7196994 | Information recording medium, information recording apparatus and information reproduction apparatus for the same | Takashi Yumiba, Takahiro Nagai, Hideshi Ishihara | 2007-03-27 |
| 7136335 | Information recording medium, recording apparatus, and reproduction apparatus | Takashi Yumiba, Takahiro Nagai | 2006-11-14 |
| 5017134 | Dental system for treating a root canal | Tsuyoshi Saito | 1991-05-21 |