Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4626737 | Mask focusing color picture tube | Shigeo Takenaka, Eiji Kamohara | 1986-12-02 |
| 4399388 | Picture tube with an electron gun having non-circular aperture | Shinpei Koshigoe, Eiji Kamohara | 1983-08-16 |
| 4368405 | Electron gun for a cathode ray tube | Shigeo Takenaka, Shinpei Koshigoe | 1983-01-11 |
| 4322655 | Beam index color cathode ray tube | Shigeo Takenaka | 1982-03-30 |
| 4217566 | In-line type color picture tube apparatus | Hisafumi Okada, Hidetoshi Yamazaki | 1980-08-12 |
| 4197487 | Beam-index tube apparatus having deflection field correcting elements | Shigeo Takenaka, Tetsuo Komatsu | 1980-04-08 |
| 4194140 | Beam-indexing color image-presentation cathode ray tube | Tetsuo Komatsu | 1980-03-18 |