Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7800712 | Cold cathode fluorescent lamp and liquid crystal display device | Toshio Suzuki, Satoshi Muto, Reiji Torai | 2010-09-21 |
| 7176641 | Cathode ray tube | Sachio Koizumi | 2007-02-13 |
| 7078851 | Cathode ray tube | Yukio Suzuki, Sachio Koizumi | 2006-07-18 |
| 6614147 | Cathode ray tube having an improved indirectly heated cathode structure | Sachio Koizumi, Norio Iwamura | 2003-09-02 |
| 6552479 | Cathode ray tube having an improved heater | Norio Iwamura, Sachio Koizumi | 2003-04-22 |
| 6531813 | Cathode ray tube having an improved cathode structure | Sachio Koizumi | 2003-03-11 |
| 6504293 | Cathode ray tube having an improved cathode | Sachio Koizumi, Norio Iwamura | 2003-01-07 |
| 6366011 | ELECTRON GUN FOR CATHODE-RAY TUBE FOR IMAGE DISPLAY HAVING AN ELECTRODE WITH REDUCED ELECTRON BEAM PASSAGE HOLE AND A CATHODE WITH AN ELECTRON EMISSIVE LAYER MAINLY MADE OF AN OXIDE OF AN ALKALINE EARTH METAL AND CONTAINING AN OXIDE OF A RARE EARTH METAL | Sachio Koizumi | 2002-04-02 |
| 6130499 | Cathode ray tube having an improved cathode structure | Sachio Koizumi | 2000-10-10 |
| 6124667 | Electron gun for a cathode-ray tube for image display having an electrode with a reduced electron beam limiting hole and a cathode with an electron emissive layer mainly made of an oxide of an alkaline metal and containing an oxide of a rare earth metal | Sachio Koizumi | 2000-09-26 |
| 5808404 | Electron tube including a cathode having an electron emissive material layer | Sachio Koizumi | 1998-09-15 |