Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6818287 | Light shielding blade material for optical apparatus | Takao Ogawa, Ryo Sakurai | 2004-11-16 |
| 6502296 | Method of fabricating a light-shielding blade composed of beryllium-aluminum alloy | Nobuyoshi Inoue, Shigemi Takahashi, Takao Ogawa | 2003-01-07 |
| 6190060 | Light-shielding blade composed of beryllium-aluminum alloy for camera | Nobuyoshi Inoue, Shigemi Takahashi, Takao Ogawa | 2001-02-20 |
| 6001465 | Light shielding blade for camera made of para-orientation aromatic polyamide film | Shigemi Takahashi, Nobuyoshi Inoue, Takao Ogawa | 1999-12-14 |