Issued Patents All Time
Showing 26–50 of 106 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE40556 | Multi-layer information recording medium and information recording and reproducing apparatus | Seiichi Ohsawa | 2008-10-28 |
| 7403468 | Recording medium having position recognition structure, and position recognition apparatus and method | Atsushi Onoe | 2008-07-22 |
| 7399423 | Thin film support substrate for use in hydrogen production filter and production method of hydrogen production filter | Hiroshi Yagi, Yoshinori Oota, Yasuhiro Uchida | 2008-07-15 |
| 7316856 | Separator for flat-type polyelectrolyte fuel cell and polyelectrolyte fuel cell employing that separator | Hiroshi Yagi, Yoshinori Oota | 2008-01-08 |
| 7241396 | Thin film support substrate for use in hydrogen production filter and production method of hydrogen production filter | Hiroshi Yagi, Yoshinori Oota, Yasuhiro Uchida | 2007-07-10 |
| 7212484 | Information recording/reading head | Atsushi Onoe | 2007-05-01 |
| RE39463 | Multi-layer information recording medium and information recording and reproducing apparatus | Seiichi Ohsawa | 2007-01-09 |
| 7128994 | Polyelectrolyte type fuel cell and separator for polyelectrolyte type fuel cell | Hiroshi Yagi | 2006-10-31 |
| RE39322 | Multi-layer information recording medium and information recording and reproducing apparatus | Seiichi Ohsawa | 2006-10-03 |
| 7112287 | Thin film supporting substrate for used in filter for hydrogen production filter and method for manufacturing filter for hydrogen production | Hiroshi Yagi, Yoshinori Oota, Yasuhiro Uchida | 2006-09-26 |
| 7075706 | Variable optical element, a pickup apparatus having the variable optical element, and an information recording and reproducing apparatus having the pickup apparatus | Hiroyuki Ota | 2006-07-11 |
| 7057817 | Optical lens device and production method thereof | — | 2006-06-06 |
| 6992953 | Tracking servo apparatus of optical information recording and reproducing apparatus | Mitsuru Sato, Junichi Furukawa, Kazuo Takahashi, Hiroshi Nishiwaki, Takayuki Nomoto +1 more | 2006-01-31 |
| 6970409 | Information recording apparatus | Yoshitsugu Araki | 2005-11-29 |
| 6885616 | Optical pickup apparatus and information recording and/or reproducing apparatus | Ikuya Kikuchi, Mitsuru Sato | 2005-04-26 |
| 6865144 | Optical pickup apparatus and tilt amount detecting method | Takuma Yanagisawa, Yoshitsugu Araki, Masayuki Iwasaki | 2005-03-08 |
| 6850474 | Multilayer optical recording medium and recording method and apparatus for the same | Yoshitsugu Araki | 2005-02-01 |
| 6839313 | Information recording and reproducing apparatus | Yoshitsugu Araki | 2005-01-04 |
| 6804185 | Optical pickup and information recording and/or reproducing apparatus including the same | Ikuya Kikuchi, Mitsuru Sato, Masayuki Iwasaki | 2004-10-12 |
| 6773781 | Multi-layer information recording medium and information recording and reproducing apparatus | Seiichi Ohsawa | 2004-08-10 |
| 6751175 | Aberration correcting device and optical pickup apparatus using the same | Ikuya Kikuchi | 2004-06-15 |
| 6738332 | Optical information recording and reproducing apparatus | Mitsuru Sato | 2004-05-18 |
| 6720056 | Multi-layer information recording medium | — | 2004-04-13 |
| 6714510 | Information recording medium including layer of uniform thickness and reproducing device thereof | Masayuki Iwasaki | 2004-03-30 |
| 6714495 | Pickup device and information recording/reproducing apparatus using the same | — | 2004-03-30 |