Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10415201 | Opening/closing device | Tamotsu Kikuchi, Takato Aoyama, Takaaki ODATE, Kenji Hasegawa, Osamu Igawa | 2019-09-17 |
| 8695628 | Opening/closing device | Hiroshi Komatsu, Kazuhiro Yamanouchi, Kenji Hasegawa, Iwao Ito | 2014-04-15 |
| 8590560 | Opening/closing device | Hiroshi Komatsu, Kazuhiro Yamanouchi, Kenji Hasegawa, Iwao Ito | 2013-11-26 |
| 4351175 | Method of manufacturing an arc-like formed product and equipment for carrying out the method | Shigeo Ichikawa, Makoto Aiba | 1982-09-28 |