Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6629635 | Information recording medium, information processing method, information processing apparatus, and program recording medium | — | 2003-10-07 |
| 6622276 | Recording medium, information reproducing apparatus and information reproducing method | Tatsuo Nagasaki, Hiroyoshi Fujimori, Takeshi Mori, Shinzo Matsui, Seiichi Wakamatsu +1 more | 2003-09-16 |
| 6460155 | Information reproducing system capable of manually reading an optically readable code and repeatedly reproducing voice information included in the code | Tatsuo Nagasaki, Hiroyoshi Fujimori, Takeshi Mori, Shinzo Matsui, Seiichi Wakamatsu +1 more | 2002-10-01 |
| 6173890 | Information recording medium and information transmission method using the information recording medium | Kazuo Shimizu | 2001-01-16 |
| 6058498 | Dot code and information recording/reproducing system for recording/reproducing the same | Tatsuo Nagasaki, Hiroyoshi Fujimori, Takeshi Mori, Shinzo Matsui, Seiichi Wakamatsu +1 more | 2000-05-02 |
| 6052813 | Dot code including a plurality of blocks wherein each of the blocks has a block address pattern representing an address of each of the blocks | Tatsuo Nagasaki, Hiroyoshi Fujimori, Takeshi Mori, Shinzo Matsui, Seiichi Wakamatsu +1 more | 2000-04-18 |
| RE36589 | Audio data recording system for recording voice data as an optically readable code on a recording medium for recording still image data photographed by a camera | Seiichi Wakamatsu | 2000-02-29 |
| 5905250 | Audio information recording/reproducing system | Hiroyuki Fukuda, Mutsumi Kikuchi, Seiichi Wakamatsu | 1999-05-18 |
| 5896403 | Dot code and information recording/reproducing system for recording/reproducing the same | Tatsuo Nagasaki, Hiroyoshi Fujimori, Takeshi Mori, Shinzo Matsui, Seiichi Wakamatsu +1 more | 1999-04-20 |
| 5644557 | Audio data recording system for recording voice data as an optically readable code on a recording medium for recording still image data photographed by a camera | Seiichi Wakamatsu | 1997-07-01 |