Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8181486 | Methods for manufacturing performs for press molding and method for manufacturing optical elements | Masahiro Yoshida, Katsumi Utsugi | 2012-05-22 |
| 7992412 | Process for producing glass shaped material and process for producing optical element | Masahiro Yoshida, Xuelu Zou | 2011-08-09 |
| 7328594 | Processes for the production of glass article | Akira Murakami, Katsumi Utsugi, Yoshinori Iguchi, Masahiro Yoshida, Atsushi Watabe | 2008-02-12 |