Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8584249 | System for preventing unauthorized use of digital content | Masataka Ishida | 2013-11-12 |
| 7908478 | Data processing method and data reading method | Masataka Ishida | 2011-03-15 |
| 5914089 | Method of sterilization and disinfection by ozone | Atsushi Murakami, Yukio Akahori | 1999-06-22 |