Issued Patents 2002
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6493306 | Optical disk, optical disk drive apparatus, and optical disk tracking method | Kazuhiko Nakane, Hiroyuki Oohata, Masato Nagasawa, Yoshinobu Ishida | 2002-12-10 |
| 6464747 | Sintered cermet material for cutting tools and method for producing the same | Yasuhiro Enya, Satoru Hosomi | 2002-10-15 |
| 6466530 | Optical disk, optical disk drive apparatus, and optical disk tracking method | Kazuhiko Nakane, Hiroyuki Oohata, Masato Nagasawa, Yoshinobu Ishida | 2002-10-15 |
| 6438079 | Optical disk, optical disk drive apparatus, and optical disk tracking method | Kazuhiko Nakane, Hiroyuki Oohata, Masato Nagasawa, Yoshinobu Ishida | 2002-08-20 |
| 6337839 | Optical disk recording medium and optical disk drive apparatus | Kazuhiko Nakane, Hiroyuki Ohata, Masato Nagasa, Yoshinobu Ishida | 2002-01-08 |
| 6337845 | Optical disk format having a continuous recording area formed of alternating land and groove revolutions, optical disk drive apparatus, and optical disk tracking method | Kazuhiko Nakane, Hiroyuki Oohata, Masato Nagasawa, Yoshinobu Ishida | 2002-01-08 |