Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5631670 | Information display device capable of increasing detection speed and detection accuracy of input coordinates on display screen by detecting movement amount of electronic pen | Takafumi Kawaguchi, Makoto Takeda | 1997-05-20 |
| 5614922 | Display apparatus | Takafumi Kawaguchi, Makoto Takeda | 1997-03-25 |