Issued Patents All Time
Showing 51–69 of 69 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6314542 | Information recording method, reproducing method, and reproducing apparatus | Yutaka Nagai, Masafumi Nakamura, Toshifumi Takeuchi | 2001-11-06 |
| 6308003 | Method of recording image data and method of reproducing information from optical disk | Hideaki Suzuki, Masafumi Nakamura, Yutaka Nagai, Toshifumi Takeuchi | 2001-10-23 |
| 6295596 | Data reproducing apparatus | Yutaka Nagai, Toshifumi Takeuchi | 2001-09-25 |
| 6233649 | Digital signal reproducing method | Hiroshi Hirayama, Osamu Kawamae, Yutaka Nagai, Toshifumi Takeuchi | 2001-05-15 |
| 6218341 | Process for the preparation of a high temperature superconductor | Hideo Ihara, Akira Iyo | 2001-04-17 |
| 6154806 | Method for recording digital signals on multiple-layered disks | Hiroshi Hirayama, Osamu Kawamae, Yutaka Nagai, Toshifumi Takeuchi | 2000-11-28 |
| 6092232 | Disk data reproducing apparatus and disk data reproducing method | Yutaka Nagai, Tomoaki Kudo, Toshifumi Takeuchi, Hiroyuki Gunji | 2000-07-18 |
| 6076135 | Information medium having a plurality of recording surfaces | Hiroshi Hirayama, Osamu Kawamae, Yutaka Nagai, Toshifumi Takeuchi | 2000-06-13 |
| 6076184 | Information recording method, reproducing method, and reproducing apparatus | Yutaka Nagai, Masafumi Nakamura, Toshifumi Takeuchi | 2000-06-13 |
| 6009237 | Optical disk and optical disk reproduction apparatus | Hideaki Suzuki, Masafumi Nakamura, Yutaka Nagai, Toshifumi Takeuchi | 1999-12-28 |
| 6002834 | Optical disk having table relating sector address and time and optical disk reproducing apparatus | Hideaki Suzuki, Masafumi Nakamura, Yutaka Nagai, Toshifumi Takeuchi | 1999-12-14 |
| 5983387 | Information recording method, reproducing method, and reproducing apparatus | Yutaka Nagai, Masafumi Nakamura, Toshifumi Takeuchi | 1999-11-09 |
| 5974581 | Information recording method, reproducing method, and reproducing apparatus | Yutaka Nagai, Masafumi Nakamura, Toshifumi Takeuchi | 1999-10-26 |
| 5966721 | Digital signal recording method and disk reproducing apparatus | Hiroshi Hirayama, Osamu Kawamae, Yutaka Nagai, Toshifumi Takeuchi | 1999-10-12 |
| 5768298 | Information recording method, reproducing method and reproducing apparatus | Yutaka Nagai, Masafumi Nakamura, Toshifumi Takeuchi | 1998-06-16 |
| 5726875 | AC-DC adapter | Hirotaka Yamamoto | 1998-03-10 |
| 5344779 | Method for production of standard oxide sample for X-ray fluorescence spectrometry | Keiji Kaneko, Hideo Ihara, Hiroko Kaneko | 1994-09-06 |
| 5112783 | Conductive copper oxide ceramics and process for producing same | Ryoji Sugise, Hiroshi Daimon, Itsuhiro Fujii, Hideo Ihara, Norio Terada +1 more | 1992-05-12 |
| 4951275 | Apparatus for tracking optical disk | Tadashi Saitoh, Takashi Takeucchi, Junichi Iida | 1990-08-21 |