Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11148474 | Tire | — | 2021-10-19 |
| 10654321 | Pneumatic tire | — | 2020-05-19 |
| 10300744 | Tire | — | 2019-05-28 |
| 10293642 | Pneumatic tire | — | 2019-05-21 |
| 10072155 | Coating composition | Katsushi Hamakubo | 2018-09-11 |
| 9873799 | Coating composition | Katsushi Hamakubo | 2018-01-23 |
| 9783683 | Coating composition | Katsushi Hamakubo | 2017-10-10 |
| 9500774 | Plastic lens and production method therefor | Katsushi Hamakubo | 2016-11-22 |
| 9322968 | Polarizing lens | Eiichi Yajima, Katsushi Hamakubo | 2016-04-26 |