Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5322541 | Method of producing glass blank | Yoshiyuki Shimizu, Shoji Nakamura, Tadayoshi Yonemoto, Masaaki Sunohara, Tadao Shioyama | 1994-06-21 |
| 5284501 | Method of manufacturing glass optical element | Hideto Monji, Kiyoshi Kuribayashi, Makoto Umetani | 1994-02-08 |