| Patents for H01J 23 - Details of transit-time tubes of the types covered by group (3,921) |
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| 11/16/2004 | US6819541 Capacitor for magnetron of a microwave oven |
| 11/11/2004 | US20040222744 Vacuum tube electrode structure |
| 11/09/2004 | US6815897 Magnetrons having a coaxial line output with unwanted mode energy reduction |
| 11/03/2004 | CN2653832Y Magnetron drive power supply |
| 11/03/2004 | CN1542889A Electron tube control grid |
| 10/28/2004 | US20040212329 Electrostatic fluid accelerator for and a method of controlling fluid flow |
| 10/21/2004 | WO2004090929A1 Anode for magnetron in microwave oven, manufacturing method of the same and forming apparatus for thereof |
| 10/21/2004 | US20040206754 Low-noise, crossed-field devices such as a microwave magnetron, microwave oven utilizing same and method of converting a noisy magnetron to a low-noise magnetron |
| 10/21/2004 | US20040206751 Low-noise, crossed-field devices such as a microwave magnetron having an azimuthally-varying axial magnetic field and microwave oven utilizing same |
| 10/14/2004 | WO2004088703A1 Cold-cathode electron source, microwave tube using this, and its manufacturing method |
| 10/13/2004 | EP1466343A2 Electronic tube with simplified collector |
| 10/12/2004 | US6803726 Noise filter of high frequency generator |
| 10/12/2004 | US6803725 On-chip vacuum microtube device and method for making such device |
| 10/07/2004 | WO2004049378A3 Vacuum tube electrode structure |
| 09/30/2004 | US20040189210 Multilayer field emission klystron |
| 09/23/2004 | US20040183506 High voltage switching apparatus |
| 09/22/2004 | EP1459347A2 Method for making electrodes and vacuum tube using same |
| 09/21/2004 | US6794822 Field emission electron source, electron gun and cathode ray tube device using the same |
| 09/14/2004 | US6791268 Noise filter for a high frequency generator |
| 09/09/2004 | US20040174211 Inductive output tube having a broadband circuit |
| 09/08/2004 | EP1105907B1 Travelling wave tube configuration |
| 09/08/2004 | CN1165943C 磁控管 Magnetron |
| 09/07/2004 | US6787998 Inner conductor for a co-axial gyrotron with axial corrugations which are evenly distributed around the periphery |
| 09/07/2004 | US6787997 Linear-beam microwave tube |
| 09/02/2004 | US20040169554 Device for amplifying a high frequency signal |
| 09/01/2004 | EP1451845A2 Electron collector |
| 08/25/2004 | EP1449237A2 High-pressure discharge lamp |
| 08/25/2004 | EP1449229A1 Phased array source of electromagnetic radiation |
| 08/24/2004 | US6781314 Magnetron |
| 08/24/2004 | US6781313 Tubular capacitor for use in an electron beam tube |
| 08/18/2004 | EP1446789A2 Display system comprising a video processor |
| 08/17/2004 | US6777893 Radio frequency focused interdigital linear accelerator |
| 08/17/2004 | US6777877 Gun-only magnet used for a multi-stage depressed collector klystron |
| 08/17/2004 | US6777876 Power-supply unit for microwave tube |
| 08/12/2004 | WO2004051692A3 Electron bean tubes |
| 08/11/2004 | EP1444715A2 Microwave generator with virtual cathode |
| 08/10/2004 | US6774568 Magnetron for microwave oven |
| 08/10/2004 | US6774552 Electron gun |
| 08/04/2004 | EP1442470A1 Electron beam tube apparatus |
| 08/04/2004 | CN1518214A Noise filter for high-frequency generator |
| 08/04/2004 | CN1518053A Bulb-type no-electrode fluorescent lamp and starting device of no-electrode fluorescent lamp |
| 08/04/2004 | CN1518037A Anode and magnetron with the anode |
| 08/03/2004 | US6771023 System and method for regulating cathode ray tube beam current using autobias |
| 07/29/2004 | US20040145929 Power-supply unit for electronic oven |
| 07/28/2004 | EP1441378A2 Anode and magnetron therewith |
| 07/27/2004 | US6768267 Cathode ray tube with efficiently driven electron gun |
| 07/27/2004 | US6768265 Electron gun for multiple beam klystron using magnetic focusing |
| 07/22/2004 | WO2004006281A3 Method and apparatus for magnetic focusing of off-axis electron beam |
| 07/22/2004 | US20040140770 Noise filter for a high frequency generator |
| 07/22/2004 | US20040140746 Self-ballasted electrodeless fluorescent lamp and electrodeless fluorescent lamp operating device |
| 07/22/2004 | US20040140207 Anode and magnetron therewith |
| 07/21/2004 | EP1439569A2 Discharge lamp with a base and method and fixture for manufacturing the same |
| 07/21/2004 | EP1439552A1 Noise filter for a high frequency generator |
| 07/08/2004 | US20040130255 Discharge lamp with bulb fixture arrangement and method for manufacturing the same |
| 07/06/2004 | US6759639 Magnetron for microwave ovens |
| 06/30/2004 | CN1155983C Method for mfg. magnetron |
| 06/29/2004 | US6756735 Magnetron and method for joining magnetron components |
| 06/29/2004 | US6756734 Electron tube device mounted with a cold cathode and a method of impressing voltages on electrodes of the electron tube device |
| 06/24/2004 | WO2004021611A3 Wireless communication system with high efficiency/high power optical source |
| 06/24/2004 | US20040118841 Magnetron and microwave oven and high frequency heating apparatus each equipped with the same |
| 06/24/2004 | US20040118840 Device for producing high frequency microwaves |
| 06/23/2004 | CN1506999A Magnetron and microwave oven and high-frequency heating equipment equiped with the same magnetron |
| 06/23/2004 | CN1506998A Magnetron and microwave oven and high frequency heating device mounted with the same magnetron respectively |
| 06/23/2004 | CN1155044C Electron beam tubes |
| 06/17/2004 | WO2004051692A2 Electron bean tubes |
| 06/17/2004 | US20040113560 Magnetron |
| 06/17/2004 | CA2508075A1 Electron beam tubes |
| 06/16/2004 | EP1429365A2 Magnetron, and microwave oven and high-frequency heating apparatus each equipped with the same |
| 06/10/2004 | WO2004049378A2 Vacuum tube electrode structure |
| 06/10/2004 | US20040108816 Magnetron, and microwave oven and high-frequency heating apparatus each equipped with the same |
| 06/10/2004 | US20040108550 On-chip vacuum microtube device and method for making such device |
| 06/09/2004 | EP1426996A2 Magnetron and microwave oven and high frequency heating apparatus each equipped with the same |
| 06/09/2004 | CN1503304A Magnetron for microwave oven |
| 06/09/2004 | CN1503303A Filter for eliminating interference of magnetron |
| 06/09/2004 | CN1503302A Output component structure for magnetron |
| 06/09/2004 | CN1503301A Magnetron and method for connecting magnetron elements |
| 06/08/2004 | US6747412 Traveling wave tube and method of manufacture |
| 06/03/2004 | WO2003027994A3 Display system comprising a video processor |
| 06/03/2004 | US20040104679 Pulse magnetron |
| 06/02/2004 | EP1423913A1 Device for amplifying a high frequency signal |
| 06/02/2004 | CN1501430A Pulse magnetron |
| 06/02/2004 | CN1152410C Full-metallic spiral slow-wave structure |
| 06/02/2004 | CN1152408C Preparation method of small multiple injection speed regulating pipe cover-film cathode |
| 06/01/2004 | US6744185 Beam-index-type cathode ray tube |
| 05/27/2004 | US20040100214 Particle accelerator assembly with high power gas target |
| 05/27/2004 | US20040100213 Crt vertical scanning circuit with a low power standby |
| 05/27/2004 | US20040100199 Magnetron for microwave oven |
| 05/27/2004 | US20040100197 Electron tube for communication |
| 05/26/2004 | EP1422738A2 Magnetron for microwave oven |
| 05/26/2004 | EP1422737A2 Magnetron and method for joining magnetron components |
| 05/25/2004 | US6741019 Article comprising aligned nanowires |
| 05/20/2004 | US20040095082 Method for forming an image on a screen of a cathode ray tube |
| 05/20/2004 | US20040095073 Magnetron and method for joining magnetron components |
| 05/19/2004 | CN1497646A 磁控管 Magnetron |
| 05/19/2004 | CN1150586C Method for making noice filter for magnetron |
| 05/13/2004 | WO2004006410A3 Apparatus and method for powering multiple magnetrons using a single power supply |
| 05/12/2004 | CN1149629C Microwave non-electrode discharge lamp device |
| 05/12/2004 | CN1149614C Anode structure and magnetrons |
| 05/06/2004 | EP1222711B1 High frequency apparatus |
| 05/05/2004 | CN1149002C Magnetron drive power supply apparatus |