Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8182860 | Dental filler | Keisuke Ohtsuka, Hirokazu Tanaka | 2012-05-22 |
| 7978409 | Hard coat layer-forming composition and optical lens | Hirokazu Tanaka, Sachio Murai, Hideki Ito | 2011-07-12 |