Issued Patents 1997
Showing 1–4 of 4 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 | Akira Tomiyoshi, Takafumi Kawaguchi | 1997-05-20 |
| 5614922 | Display apparatus | Takafumi Kawaguchi, Akira Tomiyoshi | 1997-03-25 |
| 5598177 | Driving apparatus and method for an active matrix type liquid crystal display apparatus | Katsuya Mizukata, Takafumi Kawaguchi, Shiro Takeda | 1997-01-28 |
| 5594146 | Process for producing 5-aminotetrazole | Masahiro Murotani, Hajime Mura, Hiroshi Shibafuchi | 1997-01-14 |