Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4387953 | Optical waveguide device with phase matching layers | Masataka Shirasaki | 1983-06-14 |
TO
Takeshi Obokata
Overall (All Time): #4,052,905 of 4,157,543Top 100%
1
Patents All Time