Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11246382 | Copper alloy fastener element and slide fastener | Takanori Kumei, Atsushi Ogihara, Chikako Hiromi, Yoshio Taira, Takahiro Fukuyama +1 more | 2022-02-15 |
| 10918171 | Copper alloy fastener element and slide fastener | Takanori Kumei, Atsushi Ogihara, Chikako Hiromi, Yoshio Taira, Takahiro Fukuyama +1 more | 2021-02-16 |