Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11515810 | Energy conversion film and energy conversion element using same | Hiroshi Koike, Seiichiro Iida | 2022-11-29 |
| 11433333 | Electretized sheet and filter | Hiroshi Koike, Seiichiro Iida | 2022-09-06 |
| 11176918 | Piezoelectric element and musical instrument | Hiroshi Koike, Seiichiro Iida, Kunio Hiyama, Suguru Sasaki, Hidekazu Kodama | 2021-11-16 |
| 11148393 | Electrostatic adsorbable laminated sheet and display material | Hiroshi Koike | 2021-10-19 |