Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8924050 | Railway signalling system and on-board signalling system | Keiichi Katsuta, Yoichi Sugita, Keiji Maekawa, Naoki Shibata, Motonari SUZUKI | 2014-12-30 |
| 8285219 | Apparatus and method for searching for wireless station locations | Yoshihito Sato, Yoshinori Okura | 2012-10-09 |
| 7989330 | Dry etching method | Takeshi Shima, Kenichi Kuwabara, Tomoyoshi Ichimaru | 2011-08-02 |