Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5316571 | Alumina-spinel type monolithic refractories | Takashi Yamamura, Yoshihisa Hamazaki, Makoto Nanba, Yukitoshi Kubota | 1994-05-31 |
| 4860272 | Erroneous track jump restoration apparatus for optical record disc player | Meisei Nishikawa, Jun Inagawa, Takeshi Inagaki, Yasuhiro Hayashi, Tadashi Kojima | 1989-08-22 |