Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8420200 | Preform for optical element and optical element | Futoshi Ishizaki, Shigeki Fukuda | 2013-04-16 |
| 8003186 | Preform for optical element and optical element | Futoshi Ishizaki, Shigeki Fukuda | 2011-08-23 |
| 7587913 | Globular glass manufacturing apparatus and method for manufacturing the globular glass | Akimasa Yamagata, Futoshi Ishizaki | 2009-09-15 |