Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6297812 | Information display system for electronically reading a book | Makoto Ohara, Hirotsugu Tomizawa | 2001-10-02 |
| 6052117 | Information display system for electronically reading a book | Makoto Ohara, Hirotsugu Tomizawa | 2000-04-18 |
| 5739814 | Information storage system and book device for providing information in response to the user specification | Makoto Ohara | 1998-04-14 |
| 5485176 | Information display system for electronically reading a book | Makoto Ohara, Hirotsugu Tomizawa | 1996-01-16 |