Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8213284 | Multi-layered rewritable optical disc recording apparatus and recording method | Tetsuji Kawashima, Yoshiyuki Tokumoto, Toru Ifuku, Hiroshi Naganuma, Kiyoshi Arai +1 more | 2012-07-03 |
| 7940636 | Recording medium, recording apparatus and recording method | Tetsuji Kawashima, Hiro Kawakami | 2011-05-10 |
| 7539114 | Recording apparatus and recording method | Hiro Kawakami, Taku Watanabe | 2009-05-26 |
| 7423952 | Recording medium, recording apparatus and recording method | Tetsuji Kawashima, Hiro Kawakami | 2008-09-09 |
| 7417928 | Optically recorded data discrimination apparatus and associated methodology | — | 2008-08-26 |
| 7319651 | Recording apparatus and recording method | Tetsuji Kawashima | 2008-01-15 |
| 7319649 | Recording apparatus and recording method | Tetsuji Kawashima | 2008-01-15 |
| 7319650 | Recording apparatus and recording method | Tetsuji Kawashima | 2008-01-15 |
| 7177251 | Recording method, recording apparatus, reproduction method and reproduction apparatus for recording and reproducing data in which additional information is buried in contents data | Tetsuji Kawashima | 2007-02-13 |
| 7113466 | Recording apparatus and recording method | Tetsuji Kawashima | 2006-09-26 |
| 7085214 | Data recording apparatus, data recording method, and optical recording medium including pseudo-erasing features | — | 2006-08-01 |
| 7082089 | Data recording apparatus, data recording method, and optical recording medium including pseudo-erasing features | — | 2006-07-25 |
| 6992960 | Recording apparatus and recording method | Tetsuji Kawashima | 2006-01-31 |
| 6990054 | Recording apparatus and recording method | Tetsuji Kawashima | 2006-01-24 |
| 6985420 | Optically recorded data discrimination apparatus and associated methodology | — | 2006-01-10 |
| 6904008 | Recording apparatus and recording method | Tetsuji Kawashima | 2005-06-07 |
| 6876615 | Data recording apparatus, data recording method, and optical recording medium including psuedo-erasing features | — | 2005-04-05 |
| 6804188 | Data recording medium, data recording apparatus and method, and data reproducing apparatus and method | Tetsuji Kawahima, Yoichiro Sako, Tatsuya Inokuchi, Katsumi Toyama, Shigeki Tsukatani | 2004-10-12 |
| 6785213 | Disk drive apparatus, and disk formatting method | Shigeki Tsukatani, Osamu Udagawa | 2004-08-31 |
| 6714509 | Disk recording medium and disk drive apparatus | Eiji Kumagai, Michihiko Iida | 2004-03-30 |
| 6704262 | Optical disc and optical disc apparatus for identifying synchronization patterns thereof | Tetsuji Kawashima | 2004-03-09 |
| 6693855 | Optical disc and optical disc apparatus | Tetsuji Kawashima, Futoshi Tsukada, Kunihiko Miyake | 2004-02-17 |
| 6657938 | Disk having expanded elapsed time information | Yoichiro Sako, Tetsuji Kawahima, Shigeki Tsukatani, Katsumi Toyama, Tatsuya Inokuchi | 2003-12-02 |
| 6519217 | Data record medium, data recording and/or reproducing apparatus, and record medium determining method | Tetsuji Kawashima, Katsumi Toyama, Yoichiro Sako, Tatsuya Inokuchi, Shigeki Tsukatani | 2003-02-11 |
| 6438084 | Data recording apparatus and method, data playback apparatus and method, and optical disc | Tetsuji Kawashima, Yoichiro Sako, Tatsuya Inokuchi | 2002-08-20 |