Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818047 | Polarized wave preserving fiber | Yuuetsu Takuma, Hiroshi Kajioka, Tatsuya Kumagai, Kohdo Yamada | 1989-04-04 |
| 4610506 | Single polarization optical fibers | Masaaki Kato | 1986-09-09 |
| 4500168 | Single polarization optical fibers | Hiroshi Kajioka, Junkichi Nakagawa | 1985-02-19 |
| 4493530 | Single polarization optical fibers | Hiroshi Kajioka, Junkichi Nakagawa | 1985-01-15 |