Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4453803 | Optical waveguide for middle infrared band | Takehiko Hidaka, Takitaro Morikawa, Junichi Shimada | 1984-06-12 |
| 4194916 | Reversibly photosensitive glass | Hiroshi Namikawa | 1980-03-25 |