Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6768074 | Easily peelable sheet having contact plates and switch device employing the same | — | 2004-07-27 |
| 6548779 | Sheet having moving contacts and sheet switch | Katsutoshi Takahashi, Takeo Yamagata | 2003-04-15 |
| 6271491 | Push button switch including dome-shaped movable contact having reverse function | Yutaka Ono, Takeo Yamagata | 2001-08-07 |
| 6259046 | Sheet with movable contacts and sheet switch | Takeo Yamagata | 2001-07-10 |
| 5510810 | Display screen control apparatus | Akio Nishijima, Syoji Suganami, Katsutoshi Suzuki | 1996-04-23 |
| 5104426 | Method of and apparatus for separating gas mixture | Ryokichi Yamada, Tetsuro Haga, Shuntaro Koyama, Akio Yamamoto, Yasuo Funayama +1 more | 1992-04-14 |