Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10683935 | Sealing device | Satoshi Yamanaka, Norimasa HOSONUMA, Maiko Kawamoto | 2020-06-16 |
| 10352450 | Sealing device | Satoshi Yamanaka, Norimasa HOSONUMA, Maiko Kawamoto | 2019-07-16 |
| 10190689 | Seal ring | Yusuke Yoshida, Nozomu Suzuki, Norimasa HOSONUMA, Shigenobu Honda, Kenichi Yoshimura +2 more | 2019-01-29 |
| 9388705 | Sealing device | Kazunari Seki, Koji Watanabe, Wataru Tokunaga, Yuki Takao, Hirotaka Mizuta +5 more | 2016-07-12 |
| 9309973 | Sealing device and sealing structure | Kazunari Seki, Koji Watanabe, Wataru Tokunaga, Yuki Takao, Hirotaka Mizuta +5 more | 2016-04-12 |
| 9157530 | Sealing device and sealing structure | Kazunari Seki, Koji Watanabe, Wataru Tokunaga, Yuki Takao, Hirotaka Mizuta +5 more | 2015-10-13 |