Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5753730 | Plastic lenses having a high-refractive index, process for the preparation thereof and casting polymerization process for preparing sulfur-containing urethane resin lens and lens prepared thereby | Teruyuki Nagata, Koju Okazaki, Nobuyuki Kajimoto, Yoshinobu Kanemura, Katsuyoshi Sasagawa +1 more | 1998-05-19 |
| 5602812 | Reproducing rate control apparatus for optical disk | Mitsumasa Kubo, Akira Mashimo | 1997-02-11 |
| 5594088 | Plastic lenses having a high-refractive index, process for the preparation thereof and casting polymerization process for preparing sulfur containing urethane resin lens and lens prepared thereby | Teruyuki Nagata, Koju Okazaki, Nobuyuki Kajimoto, Yoshinobu Kanemura, Katsuyoshi Sasagawa +1 more | 1997-01-14 |
| 5590105 | Disk apparatus using constant linear velocity method and having head function stopped in standby mode | Katsuya Enami | 1996-12-31 |
| 5552945 | Transducer recalibration system and method for a rotating disk data storage | Hiroshi Tsuyuguchi | 1996-09-03 |
| 5535183 | Optical disk reproducing device and its seek operation method | Mitsumasa Kubo, Akira Mashimo | 1996-07-09 |
| 5521895 | Optical disk reproducing apparatus for controlling the rotational speed of a spindle motor between a CLV control and a CAV control | Mitsumasa Kubo, Akira Mashimo | 1996-05-28 |
| 5434724 | Method and apparatus for the high speed driving of a stepper motor against seek error upon power restoration in a microcomputer system | Makoto Shoji, Hiroshi Tsuyuguchi | 1995-07-18 |
| 5408369 | Power saving system for rotating disk data storage apparatus | Hiroshi Tsuyuguchi | 1995-04-18 |
| 5400190 | Power saving system for a disk sensor in rotating disk data storage apparatus | — | 1995-03-21 |
| 5357384 | Rotating disk data storage apparatus capable of preventing head travel when the disk is not loaded | Hiroshi Tsuyuguchi, Shinichiro Tanaka, Miya Enami, Hikaru Tamada, Yoshiaki Sakai | 1994-10-18 |
| 5345343 | Power saving system for file protect and disk capacity sensors in rotating disk data storage apparatus | Hiroshi Tsuyuguchi | 1994-09-06 |
| 5309296 | System for eliminating noise arising from difference in polarity of magnetization by tunnel erase heads | Fumio Nagase, Hiroshi Tsuyuguchi | 1994-05-03 |
| 5303107 | System for holding a track counter active despite power suspension in rotating disk data storage apparatus | Hiroshi Tsuyuguchi, Fumio Nagase, Miya Enami | 1994-04-12 |
| 5293601 | Floppy disk control unit and apparatus having a floppy disk control unit | Hiroshi Tsuyuguchi, Shinichiro Tanaka, Fumio Nagase, Naoki Sugeta, Miya Enami +1 more | 1994-03-08 |
| 5293625 | Signal selecting circuit which selectively outputs predetermined signal to host computer compatible with plurality of computer hardware types and disk drive having such signal selecting circuit | Hiroshi Tsuyuguchi, Shozo Touma | 1994-03-08 |
| 5283702 | Power saving system for rotating disk data storage apparatus | Hiroshi Tsuyuguchi, Yoshio Hirose, Kazuhiko Inoue, Miya Enami | 1994-02-01 |
| 5150340 | Disc apparatus for reading out information from disc recording medium | Miya Umeda, Katsuya Enami | 1992-09-22 |
| 5126388 | Highly-refractive plastic lens and process for making the lens | Teruyuki Nagata, Koju Okazaki, Nobuyuki Kajimoto, Yoshinobu Kanemura, Katsuyoshi Sasagawa | 1992-06-30 |
| 5123954 | 3,4-trans-4-ethyl-1-(substituted phenyl)-3- (substituted phenyl) pyrrolidin-2-ones, method for preparing the same, and herbicidal method compositions containing the same as herbicidally active ingredients | Koichi Moriyasu, Kengo Oda, Kanji Tomiya, Makoto Nishida, Sachiko Hibi | 1992-06-23 |
| 5084545 | Resin having a large refractive index, lenses comprising the resin and process for preparing the lens | Teruyuki Nagata, Koju Okazaki | 1992-01-28 |
| 5021503 | Resin for plastic lens having high-refractive index, lens comprising the resin, and method for preparation of the lens | Teruyuki Nagata, Koju Okazaki, Nobuyuki Kajimoto, Yoshinobu Kanemura, Katsuyoshi Sasagawa | 1991-06-04 |
| 5013496 | Process for molding a highly-refractive plastic lens | Teruyuki Nagata, Koju Okazaki, Nobuyuki Kajimoto, Yoshinobu Kanemura, Katsuyoshi Sasagawa | 1991-05-07 |
| 4946923 | S-alkyl thiocarbamate base resin, plastic lens comprising the resin, and process for making the lens | Teruyuki Nagata, Koju Okazaki, Nobuyuki Kajimoto, Yoshinobu Kanemura, Katsuyoshi Sasagawa | 1990-08-07 |
| 4939306 | Preparation process of 4,4'-biphenol, precursor of same and preparation process of precursor | Teruyuki Nagata, Koju Okazaki, Masayuki Furuya, Emiko Nishida | 1990-07-03 |