Issued Patents 1994
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5368789 | Method for forming substrate sheet for optical recording medium | Hirofumi Kamitakahara, Hitoshi Yoshino, Osamu Kanome, Tetsuya Sato | 1994-11-29 |
| 5324188 | Roller stamper for molding a substrate sheet to become an information recording medium | Tsuyoshi Santoh, Hiroyuki Sugata, Masataka Yashima, Hirofumi Kamitakahara, Hitoshi Yoshino +2 more | 1994-06-28 |
| 5320514 | Roll stamper, and apparatus and process for manufacturing substrate sheet for information recording mediums by using the same | Osamu Kanome, Hirofumi Kamitakahara, Naoki Kushida, Hitoshi Yoshino, Toshiya Yuasa +1 more | 1994-06-14 |
| 5320787 | Apparatus and process for manufacturing substrate sheet for information recording mediums | Hirofumi Kamitakahara, Hitoshi Yoshino, Osamu Kanome, Tetsuya Sato | 1994-06-14 |
| 5308235 | Roll stamper and apparatus for forming a substrate for information recording medium | Hirofumi Kamitakahara, Yukitoshi Ohkubo, Naoki Kushida, Hitoshi Yoshino, Osamu Kanome +1 more | 1994-05-03 |
| 5281372 | Process for producing resin moldings having a concave-convex pattern on the surface | Hirofumi Kamitakahara, Naoki Kushida, Hitoshi Yoshino, Osamu Kanome, Tetsuya Sato | 1994-01-25 |