Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6239788 | Coordinate input device and display-integrated type coordinate input device capable of directly detecting electrostatic coupling capacitance with high accuracy | Hitoshi Nohno, Masayuki Katagiri, Kengo Takahama, Hiroyuki Iwahashi | 2001-05-29 |
| 5854448 | Coordinate input device used for inputting characters and drawings into a personal computer/word processor | Takao Tagawa | 1998-12-29 |
| 5825345 | Display-integrated type tablet device | Kengo Takahama, Takao Tagawa | 1998-10-20 |
| 5491706 | Display-integrated type tablet device capable of detecting correct coordinates at a tip end of a detection pen by detecting external noise | Takao Tagawa, Hitoshi Nohno, Kazunari Okamura | 1996-02-13 |