Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6756734 | Electron tube device mounted with a cold cathode and a method of impressing voltages on electrodes of the electron tube device | Shunji Tsuida, Hironori Imura | 2004-06-29 |
| 6583567 | Electron tube device mounted with a cold cathode and a method of impressing voltages on electrodes of the electron tube device | Shunji Tsuida, Hironori Imura | 2003-06-24 |
| 6310438 | Electron tube device mounted with a cold cathode and a method of impressing voltages on electrodes of the electron tube device | Shunji Tsuida, Hironori Imura | 2001-10-30 |
| 6028391 | Field emission device having spherically curved electron emission layer and spherically recessed substrate | — | 2000-02-22 |
| 6024618 | Method of operating electron tube | Hisashi Takemura | 2000-02-15 |
| 5986388 | Field-emission cold-cathode electron gun having emitter tips between the top surface of gate electrode and focusing electrode | — | 1999-11-16 |
| 5977719 | Field emission cathode type electron gun with individually-controlled cathode segments | — | 1999-11-02 |
| 5965977 | Apparatus and method for light emitting and cold cathode used therefor | — | 1999-10-12 |
| 5929557 | Field-emission cathode capable of forming an electron beam having a high current density and a low ripple | Masaaki Takahashi | 1999-07-27 |
| 5821679 | Electron device employing field-emission cathode | — | 1998-10-13 |
| 5814931 | Cold cathode and cathode ray tube using the cold cathode | — | 1998-09-29 |
| 5734223 | Field emission cold cathode having micro electrodes of different electron emission characteristics | Yoshiaki Yanai | 1998-03-31 |
| 5680011 | Cold cathode density-modulated type electron gun and microwave tube using the same | — | 1997-10-21 |
| 5650688 | Field emission cold cathode element having exposed substrate | Keizo Yamada, Hironori Imura | 1997-07-22 |
| 5648698 | Field emission cold cathode element having exposed substrate | Keizo Yamada, Hironori Imura | 1997-07-15 |
| 5635789 | Cold cathode | Keizo Yamada, Hironori Imura | 1997-06-03 |
| 5604401 | Field-emission cold cathode for dual-mode operation useable in a microwave tube | — | 1997-02-18 |
| 5585689 | Field-emission cathode having integrated electrical interconnects and electron tube using the same | Hironori Imura, Yoshinori Tomihari | 1996-12-17 |
| 5559390 | Field emission cold cathode element with locally thickened gate electrode layer | Keizo Yamada, Hironori Imura | 1996-09-24 |
| 5557160 | Field emission cathode including cylindrically shaped resistive connector and method of manufacturing | Akihiko Okamoto | 1996-09-17 |
| 5550435 | Field emission cathode apparatus | Toshihide Kuriyama | 1996-08-27 |
| 5514847 | Electron beam radiator with cold cathode integral with focusing grid member and process of fabrication thereof | Keizo Yamada, Yoshinori Tomihari | 1996-05-07 |
| 5514526 | Fluorine-containing composition for forming anti-reflection film on resist surface and pattern formation method | Mineo Nishi | 1996-05-07 |
| 5496199 | Electron beam radiator with cold cathode integral with focusing grid member and process of fabrication thereof | Keizo Yamada, Yoshinori Tomihari | 1996-03-05 |
| 5447790 | Magnetic recording medium having a fibrous substrate, a styrene-butadiene underlayer, and a magnetic layer on a first side and an image recording layer on the second side | Haruyoshi Funae, Sadao Kinugasa, Hideaki Senoh | 1995-09-05 |