Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828420 | Interdental tooth cleaning appliance | Sumio Kuriyama, Hideyo Maniwa | 1989-05-09 |
| 4411863 | Low-carat corrosion-resistant gold alloy with the skin of the alloy not being blacked upon casting | Hideyo Maniwa, Shinya Nishina | 1983-10-25 |