Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852982 | Graded index lens array | Takashi Yamamoto, Masaaki Oda | 1989-08-01 |
| 4822122 | Optical transmission medium and process for producing the same based on vinylidene flouride polymers and metharylate polymers | Takashi Yamamoto, Masaaki Oda | 1989-04-18 |
| 4799761 | Plastic optical transmission medium, process for producing the same and array of lenses using the same | Takashi Yamamoto, Masaaki Oda | 1989-01-24 |