Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10359090 | Compression coil spring and method for producing same | Kazuya Ikai, Tohru Shiraishi, Yoshiki Ono | 2019-07-23 |
| 10052677 | Spring forming device and forming method therefor | Keita Takahashi, Tohru Shiraishi, Kaoru Nagasawa | 2018-08-21 |