Issued Patents All Time
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 #37 of 59Top 65%
Overall (All Time): #3,715,201 of 4,157,543Top 90%
1
Patents All Time