Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7323813 | Cathode ray tube | Kenichi Watanabe, Kazunari Noguchi | 2008-01-29 |
| 5751101 | Cathode ray tube having a contact spring fixed to an end of the shield cup with a micro vickers hardness of 250-400 | Akimasa Ishikawa | 1998-05-12 |
| 5216320 | Cathode for electron tube | Sachio Koizumi, Sadanori Taguchi | 1993-06-01 |
| 5008589 | Electron gun and method for manufacturing the same | — | 1991-04-16 |