Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6558152 | Disc-molding mold | Yasuyoshi Sakamoto, Hiroyuki Sawaishi | 2003-05-06 |
| 6126434 | Disk injection mold apparatus having mold opening guide means | Mitsuo Takahashi | 2000-10-03 |
| 6019587 | Stamper plate attaching/detaching device of an injection mold for forming an optical disc substrate | Mitsuo Takahashi | 2000-02-01 |
| 5869111 | Disk injection mold apparatus having mold opening guide means | Mitsuo Takahashi | 1999-02-09 |
| 5820898 | Metal mold apparatus for molding an optical disk | — | 1998-10-13 |
| 5753275 | Cavity plates aligning and guiding apparatus in disk injection molding dies | Mitsuo Takahashi | 1998-05-19 |
| 5388982 | Injection molding die mounted on an injection molding machine for molding optical disc base boards | Mitsuo Takahashi, Yasuyoshi Sakamoto | 1995-02-14 |