Issued Patents All Time
Showing 1–25 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12352778 | Flow velocity determining apparatus | Atsuya Ito, Ryohei Kagawa | 2025-07-08 |
| 11209359 | Apparatus and method for measuring fluid information from light scattering | Atsuya Ito, Ryohei Kagawa, Tomoya Murakami, Akari Agata, Genki Adachi | 2021-12-28 |
| 9042021 | Optical element, head-up display and light source unit | Takayuki Nomoto | 2015-05-26 |
| 8422137 | Optical element, head-up display and method for producing optical element | Takayuki Nomoto | 2013-04-16 |
| 7453787 | Optical pickup | Masakazu Ogasawara, Makoto Sato | 2008-11-18 |
| 7139234 | Optical pickup | Masakazu Ogasawara | 2006-11-21 |
| 7016269 | Optical pickup apparatus and focusing control method | Masakazu Ogasawara | 2006-03-21 |
| 6992953 | Tracking servo apparatus of optical information recording and reproducing apparatus | Mitsuru Sato, Junichi Furukawa, Kazuo Takahashi, Takanori Maeda, Hiroshi Nishiwaki +1 more | 2006-01-31 |
| 6885616 | Optical pickup apparatus and information recording and/or reproducing apparatus | Takanori Maeda, Mitsuru Sato | 2005-04-26 |
| 6804185 | Optical pickup and information recording and/or reproducing apparatus including the same | Takanori Maeda, Mitsuru Sato, Masayuki Iwasaki | 2004-10-12 |
| 6751175 | Aberration correcting device and optical pickup apparatus using the same | Takanori Maeda | 2004-06-15 |
| 6683732 | Objective lens collision preventing device and method for manufacturing the same | Takanori Maeda, Yoshitsugu Araki | 2004-01-27 |
| 6667947 | Optical multi-layer information recordating medium | Takanori Maeda, Makoto Sato, Katsuhiro Koike, Yoshitsugu Araki | 2003-12-23 |
| 6594091 | Optical pickup | Takanori Maeda, Katsuhiro Koike, Makoto Sato | 2003-07-15 |
| 6584065 | Information recording medium apparatus for forming the same and information recording and reproducing systems | Takanori Maeda | 2003-06-24 |
| 6529339 | Lens and production method therefor | Takanori Maeda, Katsuhiro Koike, Makoto Sato | 2003-03-04 |
| 6518555 | Polarization hologram lens, optical pickup, information reproduction apparatus and information recording apparatus | Yoshitsugu Araki | 2003-02-11 |
| 6501711 | Pickup drive apparatus, pickup drive method, and recording/reproducing apparatus | Kiyoshi Tateishi, Mitsuru Sato | 2002-12-31 |
| 6373807 | Optical pickup information reproducing apparatus and information recording apparatus | Sakashi Ohtaki | 2002-04-16 |
| 6353582 | Pickup device | — | 2002-03-05 |
| 6339570 | Optical pickup system | Takanori Maeda | 2002-01-15 |
| 6320699 | Aberration correcting apparatus and optical apparatus using the same | Takanori Maeda | 2001-11-20 |
| 5892748 | Optical pickup for reading or recording information on a recording surface | — | 1999-04-06 |
| 5333124 | Magnetic optical disk player having improved servoresponse sensitivity | Ryo Sato | 1994-07-26 |
| 5220544 | Magnetic optical disk player having improved magnetic field orientations | Ryo Sato | 1993-06-15 |