Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7656773 | Objective lens unit and optical pickup device | Akira Sawagami | 2010-02-02 |
| 7151640 | Molded lens having an outer circumference and first and second optical surfaces with cut off peripheral portions, and molding die for the molded lens | Akira Sawagami, Toshiyuki Kojima | 2006-12-19 |
| 6947230 | Molded lens having an outer circumference and first and second optical surfaces with cut off peripheral portions, and molding die for the molded lens | Akira Sawagami, Toshiyuki Kojima | 2005-09-20 |