Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846747 | Shadow mask, and method of manufacturing the same | Yasuhisa Ohtake, Masaharu Kanto, Fumio Mori | 1989-07-11 |
| 4827178 | Image display tube | Michihiko Inaba, Yasuhisa Ohtake, Masaharu Kanto | 1989-05-02 |