Issued Patents All Time
Showing 326–350 of 352 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6081785 | Optical disk, optical recorder, optical reproducer, crytocommunication system and program license system | Yoshiho Gotoh, Shinichi Tanaka, Kenji Koishi, Mitsurou Moriya, Yoshinari Takemura | 2000-06-27 |
| 6052465 | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk | Yoshiho Gotoh, Shinichi Tanaka, Kenji Koishi, Mitsuro Moriya | 2000-04-18 |
| 6049651 | Communication system | — | 2000-04-11 |
| 5999569 | Communication system | — | 1999-12-07 |
| 5959948 | Recording and reproducing apparatus | — | 1999-09-28 |
| 5892879 | Communication system for plural data streams | — | 1999-04-06 |
| 5881038 | Method and apparatus for preventing illegal copy or illegal installation of information of optical recording medium | Yoshiho Gotoh | 1999-03-09 |
| 5819000 | Magnetic recording and playback apparatus | — | 1998-10-06 |
| 5807640 | Optical recording medium, reproducing system, method of reproducing optical disk, method of fabricating optical disk original record, and method of stopping illegal program operation | Fumiaki Ueno | 1998-09-15 |
| 5805551 | Method and apparatus for preventing illegal copy or illegal installation of information of optical recording medium | Yoshiho Gotoh | 1998-09-08 |
| 5802241 | Communication system | — | 1998-09-01 |
| 5761301 | Mark forming apparatus, method of forming laser mark on optical disk, reproducing apparatus, optical disk and method of producing optical disk | Yoshiho Gotoh | 1998-06-02 |
| 5699331 | Apparatus operating with recording medium according to positional information of a secret code | — | 1997-12-16 |
| 5682360 | Recording and reproducing apparatus for use with a recording medium having an optical recording layer and magnetic recording layer | — | 1997-10-28 |
| 5600672 | Communication system | Seiji Sakashita | 1997-02-04 |
| 5555275 | Multi-threshold and hierarchical television signal transmission system | — | 1996-09-10 |
| 5526045 | Camera apparatus which automatically corrects image fluctuations | Masataka Izaki, Jirou Kajino, Yoshiaki Igarashi, Hiroshi Mitani | 1996-06-11 |
| 5526328 | Recording and reproducing apparatus with varying amounts of data in different tracks | Ryosuke Shimizu, Toshikazu Koudo, Tsukasa Yoshiura, Takumi Matsuura, Michiro Tanaka +1 more | 1996-06-11 |
| 5473584 | Recording and reproducing apparatus | — | 1995-12-05 |
| 5294991 | Camera apparatus | Masataka Izaki, Jirou Kajino, Yoshiaki Igarashi, Hiroshi Mitani | 1994-03-15 |
| 5062696 | Camera apparatus | Masataka Izaki, Jirou Kajino, Yoshiaki Igarashi, Hiroshi Mitani | 1991-11-05 |
| 5020890 | Camera apparatus with fluctuation suppressing means | Masataka Izaki, Jirou Kajino, Yoshiaki Igarashi, Hiroshi Mitani | 1991-06-04 |
| 4900649 | Method of producing an optical recording medium and an optical recording medium produced thereby | Hideaki Mochizuki, Tooru Tamura, Kenichi Takahashi | 1990-02-13 |
| 4856882 | Camera apparatus with means for suppressing fluctuations of the image | Masataka Izaki, Jirou Kajino, Yoshiaki Igarashi, Hiroshi Mitani | 1989-08-15 |
| 4638362 | Solid-state image pickup device | Kazufumi Yamaguchi | 1987-01-20 |