Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6477239 | Sign language telephone device | Masaru Ohki, Hirohiko Sagawa, Hisashi Ikeda, Hiromichi Fujisawa, Nobuo Hataoka +1 more | 2002-11-05 |
| 6181778 | Chronological telephone system | Masaru Ohki, Hirohiko Sagawa, Hisashi Ikeda, Hiromichi Fujisawa, Nobuo Hataoka +1 more | 2001-01-30 |
| 5990878 | Sign language editing apparatus | Hisashi Ikeda, Hirohiko Sagawa, Masaru Ohki, Youichi Kaneko | 1999-11-23 |
| 5953693 | Sign language generation apparatus and sign language translation apparatus | Eiji Oohira, Hirohiko Sagawa, Masaru Ohki, Kazuhiko Sagara, Kiyoshi Inoue +3 more | 1999-09-14 |
| 5734923 | Apparatus for interactively editing and outputting sign language information using graphical user interface | Hirohiko Sagawa, Masaru Ohki, Eiji Ohira, Youichi Kaneko | 1998-03-31 |
| 5659764 | Sign language generation apparatus and sign language translation apparatus | Eiji Oohira, Hirohiko Sagawa, Masaru Ohki, Kazuhiko Sagara, Kiyoshi Inoue +3 more | 1997-08-19 |