Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5411822 | Shadow mask for color cathode ray tube, shadow mask printing negative plate used for manufacture of the shadow mask, and method and manufacturing the negative plate | Yasuhisa Ohtake, Seiji Sago | 1995-05-02 |
| 5280215 | Shadow mask for color cathode ray tube | Yasuhisa Ohtake, Seiji Sago | 1994-01-18 |
| 5260153 | Aperture pattern printing plate | Yasuhisa Ohtake, Mitsuaki Yamazaki, Seiji Sagou, Hiroshi Tanaka | 1993-11-09 |
| 5134015 | Aperture pattern-printing plate for shadow mask and method for manufacturing the same | Yasuhisa Ohtake | 1992-07-28 |
| 5128224 | Method of manufacturing an aperture pattern printing plate | Yasuhisa Ohtake, Mitsuaki Yamazaki, Seiji Sagou, Hiroshi Tanaka | 1992-07-07 |