Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8420200 | Preform for optical element and optical element | Shigeki Fukuda, Kenji Sugizaki | 2013-04-16 |
| 8003186 | Preform for optical element and optical element | Shigeki Fukuda, Kenji Sugizaki | 2011-08-23 |
| 7587913 | Globular glass manufacturing apparatus and method for manufacturing the globular glass | Akimasa Yamagata, Kenji Sugizaki | 2009-09-15 |
| 5561089 | Glass-ceramic for information recording disk | Naoyuki Goto, Masashi Maekawa | 1996-10-01 |
| 5332700 | High dispersion optical glass | Katsuhiko Yamaguchi, Naoyuki Goto, Hisao Yatsuda, Goro Enomoto, Hideo Yasui | 1994-07-26 |
| 5300467 | Optical glass | Muneo Nakahara, Hiroshi Shishido, Katsuhiko Yamaguchi | 1994-04-05 |
| 5222761 | Airbag restraint system | Masao Kaji, Masayoshi Chihaya | 1993-06-29 |