Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8378598 | Motor control apparatus and motor control method | — | 2013-02-19 |
| 6477239 | Sign language telephone device | Masaru Ohki, Hirohiko Sagawa, Tomoko Sakiyama, Hisashi Ikeda, Hiromichi Fujisawa +1 more | 2002-11-05 |
| 6181778 | Chronological telephone system | Masaru Ohki, Hirohiko Sagawa, Tomoko Sakiyama, Hisashi Ikeda, Hiromichi Fujisawa +1 more | 2001-01-30 |
| 5990878 | Sign language editing apparatus | Hisashi Ikeda, Hirohiko Sagawa, Tomoko Sakiyama, Masaru Ohki | 1999-11-23 |
| 5736065 | Chemical reducing solution for copper oxide | Akishi Nakaso | 1998-04-07 |
| 5734923 | Apparatus for interactively editing and outputting sign language information using graphical user interface | Hirohiko Sagawa, Masaru Ohki, Eiji Ohira, Tomoko Sakiyama | 1998-03-31 |
| 4888135 | Electrically conductive powder and electrically conductive composition using the same | Masayuki Tsunaga, Kazuaki Yuba | 1989-12-19 |
| 4643793 | Process for treating metal surface | Akishi Nakaso, Toshiro Okamura, Kiyoshi Yamanoi | 1987-02-17 |