Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6822643 | Image-display control apparatus | Taichi Matsui, Kenji Morita | 2004-11-23 |
| 6438566 | Document processing method and apparatus which can add comment data added to an original document to a revised document | Tadashi Yamakawa, Masaaki Nagashima, Takayuki Sasaki | 2002-08-20 |
| 5481672 | Detecting rewriting of stored data, using codes based on password and the stored data | Tadashi Yamakawa, Masaaki Nagashima, Takayuki Sasaki | 1996-01-02 |
| 5455941 | System for detecting improper rewrites of data system for using separate reader writer passwords | Tadashi Yamakawa, Masaaki Nagashima, Takayuki Sasaki, Takahiro Kurosawa | 1995-10-03 |
| 5440731 | Method of detecting unjustifiable reloading of stored data | Masaaki Nagashima, Tadashi Yamakawa, Takayuki Sasaki, Takahiro Kurosawa | 1995-08-08 |