Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11240588 | Sound reproducing apparatus | Masataka Ozawa, Jo Kamada | 2022-02-01 |
| 8840006 | Friction-stir joining method | Mitsuru Sayama, Keisuke Tsuta, Tsutomu Kobayashi, Shosuke Ohhama, Tetsuya Miyahara +2 more | 2014-09-23 |
| 7563420 | Method for recovering rhodium and silver from hydrochloric acid | Shoujirou Usui, Yoshio Ito, Nobuaki Okajima | 2009-07-21 |
| 6973013 | Track jump apparatus capable of varying moving pulse and braking pulse | Hirotomo Yunoki | 2005-12-06 |