Issued Patents All Time
Showing 26–48 of 48 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8470724 | Transparent polycrystalline material and production process for the same | Takunori Taira, Shigeo Asai, Kunihiko Hara | 2013-06-25 |
| 8036073 | Storage medium managing device, storage medium managing program, and computer-readable medium | — | 2011-10-11 |
| 7974168 | Data storage medium reproducing device and method for reproducing data storage medium | — | 2011-07-05 |
| 7564756 | Reproduction device and method wherein detection of sub-data generated within a controlled time period controls appropriate decryption | — | 2009-07-21 |
| 7206351 | Signal evaluation devices and signal evaluation methods, signal quality evaluation methods and reproducing devices and recording devices | Tetsuya Okumura, Tomiyuki Numata, Shigemi Maeda, Masanori Ushioda | 2007-04-17 |
| 7126894 | Optical disk apparatus and method for adjusting optical disk apparatus laser power | — | 2006-10-24 |
| 7080313 | Signal evaluation apparatus and signal evaluation method | Tetsuya Okumura | 2006-07-18 |
| 6909677 | Optical disk, optical reproduction device, and optical recording device | Shigemi Maeda | 2005-06-21 |
| 6392970 | Reproducing light quantity control method for optical memory device, and reproducing light quantity control device, and optical recording medium | Hiroshi Fuji, Shigemi Maeda, Tomoyuki Miyake, Yasuo Nakata, Nobuo Ogata +3 more | 2002-05-21 |
| 6065094 | Inexpensive compressed data storage apparatus with improved resistance to vibrations | — | 2000-05-16 |
| 6019669 | Lens shape measuring apparatus | Ikuo Kitao, Yoshiyuki Hatano, Toshihiro Iwai, Takeshi Nakamura, Hisao Fujinuma +1 more | 2000-02-01 |
| 5984763 | Lens shape measuring apparatus | Ikuo Kitao, Yoshiyuki Hatano, Toshihiro Iwai, Takeshi Nakamura, Hisao Fujinuma +1 more | 1999-11-16 |
| 5895314 | Lens shape measuring apparatus | Ikuo Kitao, Yoshiyuki Hatano, Toshihiro Iwai, Takeshi Nakamura, Hisao Fujinuma +1 more | 1999-04-20 |
| 5764607 | Method and apparatus for controlling digital copying of digitally recorded information | Shigemi Maeda, Kunio Kojima | 1998-06-09 |
| 5712835 | Track jump device and information recording medium driving apparatus | — | 1998-01-27 |
| 5594992 | Apparatus for measuring a lens frame configuration | Yasuo Suzuki, Takashi Sato | 1997-01-21 |
| 5555229 | Method and arrangement for recording/reproducing compressed program information on a recording medium containing a plurality of programs | Kunio Kojima, Shigemi Maeda | 1996-09-10 |
| 5500839 | Multiple coil magnetic head for magnetic optical recording device | Tomoyuki Miyake, Toshiharu Inui, Kunio Kojima | 1996-03-19 |
| 5457667 | Data recording/reproducing apparatus with alternating access of compressed works | Kunio Kojima, Shigemi Maeda | 1995-10-10 |
| 5343452 | Data recording/reproducing apparatus of simultaneously performing both reproducing and recording from and in a single recording medium | Shigemi Maeda, Kunio Kojima | 1994-08-30 |
| 5315571 | Information recording and reproducing device providing faster access time to a recording medium | Shigemi Maeda, Kunio Kojima, Shigeo Terashima, Tomiyuki Numata | 1994-05-24 |
| 4735526 | Method for installing offshore jack-up structures | Akira Kawagoe, Hiromitsu Tateishi | 1988-04-05 |
| 4527087 | Fluorescent lamp | Akira Taya, Kazuo Narita, Masao Asada, Hisami Nira | 1985-07-02 |