Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881798 | Thermal optical modulation method and device using alternating current | Hirohide Munakata, Yoko Yoshinaga, Masahiro Haruta, Yukuo Nishimura | 1989-11-21 |
| 4873178 | Optical recording medium and method for conducting recording on said medium | Masahiro Haruta, Yoko Kuwae, Hirohide Munakata, Etsuko Sugawa | 1989-10-10 |
| 4832466 | Optical element | Yukuo Nishimura, Masahiro Haruta, Yoko Yoshinaga, Hirohide Munakata | 1989-05-23 |
| 4798694 | Method for producing composite materials | Hiroyuki Sugata, Kouhei Nakata, Nobutoshi Mizusawa, Masahiro Haruta, Takashi Hamamoto +1 more | 1989-01-17 |