Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5626641 | Method of manufacturing a glass blank used for optical glass elements | Tadayoshi Yonemoto, Yoshiyuki Shimizu, Takashi Inoue | 1997-05-06 |
TM
Toshihiko Muroi
Sumita Optical Glass: 1 patents #1 of 5Top 20%
Overall (1997): #65,467 of 185,788Top 40%
1
Patents 1997