Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881798 | Thermal optical modulation method and device using alternating current | Satoshi Yuasa, Hirohide Munakata, Masahiro Haruta, Yukuo Nishimura | 1989-11-21 |
| 4871411 | Method of preparing volume type hologram film | Nobuo Kushibiki, Naosato Taniguchi, Tetsuro Kuwayama | 1989-10-03 |
| 4832466 | Optical element | Yukuo Nishimura, Satoshi Yuasa, Masahiro Haruta, Hirohide Munakata | 1989-05-23 |