Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4923390 | Optical recording medium IR-ray absorptive compound and optical recording medium by use thereof | Yoshihiro Oguchi, Hiroyuki Sugata, Tetsuro Fukui, Yoshio Takasu | 1990-05-08 |
| 4871601 | Optical information recording carrier | Hiroyuki Sugata, Yoshihiro Oguchi, Hitoshi Yoshino | 1989-10-03 |
| 4670033 | Method of consolidating fine pores of porous glass | — | 1987-06-02 |