Issued Patents All Time
Showing 1–25 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7892063 | Method of manufacturing tubular carbon molecule and tubular carbon molecule, method of manufacturing recording apparatus and recording apparatus, method of manufacturing field electron emission device and field electron emission device, and method of manufacturing display unit and display unit | Dharam Pal Gosain, Hisashi Kajiura, Ryuichiro Maruyama, Masashi Shiraishi, Houjin Huang +2 more | 2011-02-22 |
| 7828620 | Method of manufacturing tubular carbon molecule and tubular carbon molecule, method of manufacturing field electron emission device and field electron emission device, and method of manufacturing display unit and display unit | Dharam Pal Gosain, Hisashi Kajiura, Ryuichiro Maruyama, Masashi Shiraishi, Houjin Huang +2 more | 2010-11-09 |
| 6038207 | Optical disk capable of inhibiting from rental use | — | 2000-03-14 |
| 5970026 | Temperature invariant, magneto-optic modulator coil driving circuit | Tetsuji Kawashima | 1999-10-19 |
| 5712836 | Apparatus and method for adjusting a rotational velocity of a disk storage medium with measuring the amount of time to reproduce address data stored thereon | Hidetoshi Kamoto | 1998-01-27 |
| 5708649 | Optical disk capable of storing information data at difference clock rates | Hidetoshi Kamoto | 1998-01-13 |
| 5640383 | Apparatus and method for reproducing data from a record medium | Hidetoshi Kamoto | 1997-06-17 |
| 5537374 | Optical recording medium and recording and/or reproducing apparatus using such optical recording medium | — | 1996-07-16 |
| 5504727 | Optical recording medium and recording and/or reproducing apparatus using such optical recording medium | — | 1996-04-02 |
| 5487056 | Optical recording medium and recording and/or reproducing apparatus using such optical recording medium | — | 1996-01-23 |
| 5471444 | Seek circuit for optical disc | — | 1995-11-28 |
| 5471447 | Seek control for information storage disc drive | — | 1995-11-28 |
| 5379282 | System for calculating focus servo control signal using focus error signal and reproduced RF signal | — | 1995-01-03 |
| 5224085 | Optical recording and reproducing apparatus that cancels recording or erase mode if focus or tracking is improper | Hiroyuki Shinkai, Susumu Tosaka, Sumihiro Okawa | 1993-06-29 |
| 5224086 | Spindle servo system for magneto-optical recording/playback apparatus | — | 1993-06-29 |
| 5170385 | Recording medium with unembossed area indicating sector divisions | Susumu Senshu, Tamotsu Yamagami, Tetsu Watanabe | 1992-12-08 |
| 5168484 | Magnetic head lifting device for magneto-optical recording/reproducing apparatus including drive means responsive to a PLL circuit | Hideki Inoue | 1992-12-01 |
| 5148424 | Detrack detecting system in an optical recording/reproducing apparatus | — | 1992-09-15 |
| 5138595 | Servo control circuit for optical disc apparatus | — | 1992-08-11 |
| 5121016 | Linear motor | — | 1992-06-09 |
| 5079757 | Servo circuit for an optical disk information recording and reproducing apparatus with improved stability for tracking and focusing control | Shinichiro Kuwabara | 1992-01-07 |
| 5056072 | Seek apparatus for optical disc drive | — | 1991-10-08 |
| 5015932 | Actuator driving circuits | — | 1991-05-14 |
| 5003523 | Apparatus for recording and reproducing information on an optical disk with a focus servo system for avoiding influence of traverse signal during search | Eiji Kumagai | 1991-03-26 |
| 4972398 | Optical disk drive with servo loop for detecting defective disks | — | 1990-11-20 |