Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8056364 | Preform production apparatus for precision press molding, production method of a preform for precision press molding and production method of an optical element | Ryousuke Sakai, Tadanao Shinozaki | 2011-11-15 |