Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8299965 | Positioning system, position information transmitter, communication terminal, and control method of the positioning system | Takamasa Kawaguchi, Tomoichi Ebata, Yutaka Shimogaki | 2012-10-30 |
| 7994970 | Positioning system, position information transmitter, communication terminal, and control method of the positioning system | Takamasa Kawaguchi, Tomoichi Ebata, Yutaka Shimogaki | 2011-08-09 |
| 4960512 | Apparatus for sludge thickening | Kenji Baba, Shoji Watanabe, Hayao Yahagi | 1990-10-02 |
| 4904388 | Process for sludge thickening | Kenji Baba, Shoji Watanabe, Hayao Yahagi | 1990-02-27 |
| 4335341 | Automatic control method and apparatus | — | 1982-06-15 |