Issued Patents 1994
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5368789 | Method for forming substrate sheet for optical recording medium | Hirofumi Kamitakahara, Hitoshi Yoshino, Tetsuya Sato, Hisanori Hayashi | 1994-11-29 |
| 5328816 | Process for producing optical recording medium | Miki Tamura, Hiroyuki Sugata, Yukitoshi Okubo, Mizuho Hiraoka, Masataka Yashima | 1994-07-12 |
| 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 | Hirofumi Kamitakahara, Naoki Kushida, Hitoshi Yoshino, Toshiya Yuasa, Takashi Kai +1 more | 1994-06-14 |
| 5320787 | Apparatus and process for manufacturing substrate sheet for information recording mediums | Hisanori Hayashi, Hirofumi Kamitakahara, Hitoshi Yoshino, Tetsuya Sato | 1994-06-14 |
| 5310333 | Roll stamper for molding substrate used for optical recording medium | Tetsuya Sato, Masataka Yashima, Hiroyuki Sugata | 1994-05-10 |
| 5308235 | Roll stamper and apparatus for forming a substrate for information recording medium | Hirofumi Kamitakahara, Yukitoshi Ohkubo, Naoki Kushida, Hitoshi Yoshino, Tetsuya Sato +1 more | 1994-05-03 |
| 5281372 | Process for producing resin moldings having a concave-convex pattern on the surface | Hisanori Hayashi, Hirofumi Kamitakahara, Naoki Kushida, Hitoshi Yoshino, Tetsuya Sato | 1994-01-25 |
| 5281371 | Method and apparatus for forming substrate sheet for optical recording medium | Miki Tamura, Tsuyoshi Santoh | 1994-01-25 |