Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4820011 | Optical wavelength conversion device, and a method of making the same | Yoji Okazaki, Kozi Kamiyama | 1989-04-11 |
SU
Shinsuke Umegaki
Overall (1989): #56,588 of 140,708Top 45%
1
Patents 1989