Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10273829 | Cylindrical case and manufacturing method of cylindrical case | Tsutomu Murakami, Ikuo Okumura, Yuu Shigenari, Takashi Harada | 2019-04-30 |
| 9988156 | Cylindrical case and manufacturing method of cylindrical case | Agamu Tanaka, Hideo Morita, Ikuo Okumura, Yuu Shigenari, Takashi Harada | 2018-06-05 |