Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7745751 | Member for push-button switch and method of manufacturing the same | Masahide Takahashi, Tomohiko Kuwabara, Toshihiko Egawa | 2010-06-29 |
| 7182907 | Method for manufacturing a key top member for push button switch structure | Takao Shimizu, Satoshi Mieno, Yoshinari Shizukuda | 2007-02-27 |
| 6954103 | Semiconductor device having internal voltage generated stably | Tadaaki Yamauchi, Junko Matsumoto, Takeo Okamoto, Makoto Suwa, Tetsuichiro Ichiguchi +2 more | 2005-10-11 |
| 6873563 | Semiconductor circuit device adaptable to plurality of types of packages | Makoto Suwa, Junko Matsumoto, Tadaaki Yamauchi, Takeo Okamoto, Tetsuichiro Ichiguchi +2 more | 2005-03-29 |
| 6813210 | Semiconductor memory device requiring refresh operation | Takeo Okamoto, Tetsuichiro Ichiguchi, Hideki Yonetani, Tadaaki Yamauchi, Makoto Suwa +2 more | 2004-11-02 |
| 6775177 | Semiconductor memory device switchable to twin memory cell configuration | Takeo Okamoto, Tetsuichiro Ichiguchi, Hideki Yonetani, Makoto Suwa, Zengcheng Tian +2 more | 2004-08-10 |
| 6724679 | Semiconductor memory device allowing high density structure or high performance | Hideki Yonetani, Kozo Ishida, Shinichi Jinbo, Makoto Suwa, Tadaaki Yamauchi +3 more | 2004-04-20 |
| 6724223 | Semiconductor device used in two systems having different power supply voltages | Tetsuichiro Ichiguchi, Tadaaki Yamauchi, Zengcheng Tian, Makoto Suwa, Junko Matsumoto +2 more | 2004-04-20 |
| 6625050 | Semiconductor memory device adaptable to various types of packages | Makoto Suwa, Shinichi Jinbo, Zengcheng Tian, Takeo Okamoto, Kozo Ishida +3 more | 2003-09-23 |
| 6621027 | Key top member for push button switch structure | Takao Shimizu, Satoshi Mieno, Yoshinari Shizukuda | 2003-09-16 |
| 6196738 | Key top element, push button switch element and method for manufacturing same | Takao Shimizu, Satoshi Mieno, Yoshinari Shizukuda | 2001-03-06 |