| Patents for H01J 25 - Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons (1,999) |
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| 01/05/2005 | CN1559631A Medical microwave magnetron and medical microwave therapeutic machine |
| 12/30/2004 | US20040262304 Magnetron |
| 12/30/2004 | US20040262302 Magnetron with evaporation baffle |
| 12/29/2004 | WO2003077273A3 High power density collector |
| 12/15/2004 | EP1485933A1 Magnetron |
| 12/15/2004 | EP1485932A1 Magnetron arrangements |
| 12/14/2004 | US6831416 Inductive compensator for magnetron |
| 12/09/2004 | WO2004107382A1 Millimeter-wave backward wave oscillator |
| 12/09/2004 | US20040245933 Method and apparatus for generation and frequency tuning of modulated, high current electron beams |
| 12/09/2004 | US20040245932 Microwave generator with virtual cathode |
| 12/02/2004 | US20040239255 Magnetron |
| 12/01/2004 | EP1482531A2 Magnetron |
| 11/30/2004 | US6825621 Electron gun for color cathode ray tube |
| 11/18/2004 | WO2004100353A2 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 |
| 11/18/2004 | US20040227468 Klystron-type devices |
| 11/11/2004 | US20040222744 Vacuum tube electrode structure |
| 11/11/2004 | DE102004009881A1 Mikrowellenbetriebener Leuchtkopf mit einem externen Verschluss Microwave-powered lamp head with an external shutter |
| 11/09/2004 | US6815897 Magnetrons having a coaxial line output with unwanted mode energy reduction |
| 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 |
| 10/07/2004 | WO2004049378A3 Vacuum tube electrode structure |
| 10/05/2004 | US6801107 Vacuum electron device with a photonic bandgap structure and method of use thereof |
| 09/30/2004 | US20040189210 Multilayer field emission klystron |
| 09/23/2004 | US20040183481 Microwave powered lamphead having external shutter |
| 09/09/2004 | US20040174211 Inductive output tube having a broadband circuit |
| 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 |
| 09/02/2004 | US20040169554 Device for amplifying a high frequency signal |
| 08/26/2004 | WO2004044943A3 Retarding electron beams in multiple electron beam pattern generation |
| 08/25/2004 | EP1449229A1 Phased array source of electromagnetic radiation |
| 08/24/2004 | US6781314 Magnetron |
| 08/19/2004 | US20040160162 Microdischarge devices and arrays |
| 08/17/2004 | US6777876 Power-supply unit for microwave tube |
| 08/12/2004 | US20040154526 Free-standing diamond structures and methods |
| 08/11/2004 | EP1444715A2 Microwave generator with virtual cathode |
| 08/10/2004 | US6774568 Magnetron for microwave oven |
| 08/04/2004 | EP1442470A1 Electron beam tube apparatus |
| 08/04/2004 | CN1518037A Anode and magnetron with the anode |
| 07/28/2004 | EP1441378A2 Anode and magnetron therewith |
| 07/28/2004 | CN2629211Y 高真空磁控管 High vacuum magnetron |
| 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 | US20040140207 Anode and magnetron therewith |
| 07/06/2004 | US6759639 Magnetron for microwave ovens |
| 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 |
| 06/22/2004 | US6753662 Intense and compact THz radiation source |
| 06/17/2004 | US20040113560 Magnetron |
| 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 |
| 06/09/2004 | 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 | CN1503301A Magnetron and method for connecting magnetron elements |
| 06/08/2004 | US6747412 Traveling wave tube and method of manufacture |
| 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 |
| 05/27/2004 | WO2004044943A2 Retarding electron beams in multiple electron beam pattern generation |
| 05/27/2004 | US20040100199 Magnetron for microwave oven |
| 05/26/2004 | EP1422738A2 Magnetron for microwave oven |
| 05/26/2004 | EP1422737A2 Magnetron and method for joining magnetron components |
| 05/20/2004 | US20040095073 Magnetron and method for joining magnetron components |
| 05/19/2004 | CN1497646A 磁控管 Magnetron |
| 05/13/2004 | US20040090194 Retarding electron beams in multiple electron beam pattern generation |
| 05/12/2004 | CN1149614C Anode structure and magnetrons |
| 04/28/2004 | CN1147909C Plate-type magnetron |
| 04/21/2004 | CN2613042Y Magnetron with stable output power |
| 04/20/2004 | US6724146 Phased array source of electromagnetic radiation |
| 04/06/2004 | US6717365 Magnetron |
| 04/01/2004 | US20040061562 Magnetron |
| 04/01/2004 | US20040060933 Magnetron for microwave ovens |
| 03/31/2004 | EP1403900A2 Magnetron for microwave ovens |
| 03/31/2004 | EP1403899A2 Magnetron for microwave ovens |
| 03/31/2004 | CN1485878A Magnetron for microwave ovens |
| 03/11/2004 | WO2004021611A2 Wireless communication system with high efficiency/high power optical source |
| 03/03/2004 | CN1479344A Coating layer shielded magnetron |
| 03/03/2004 | CN1479343A Large power quadrupole delectronic tube and its manufacturing method |
| 02/26/2004 | WO2003030204A3 Microwave generator with virtual cathode |
| 02/25/2004 | EP1391909A2 Magnetron |
| 02/25/2004 | EP1391908A2 Magnetron for microwave ovens |
| 02/25/2004 | CN1477673A 磁控管 Magnetron |
| 02/24/2004 | US6695664 Microdischarge devices and arrays |
| 02/18/2004 | CN1139095C Equalizer ring in magnetron |
| 02/18/2004 | CN1139094C Magnetron |
| 02/17/2004 | US6693378 Magnetron for microwave ovens |
| 02/11/2004 | EP1388880A2 Magnetron for microwave ovens |
| 02/11/2004 | EP1388879A2 Magnetron |
| 02/11/2004 | CN1474431A Magnetron for microwave oven |
| 02/11/2004 | CN1474430A 磁控管 Magnetron |
| 02/11/2004 | CN1474429A Magnetron of microwave oven |
| 02/05/2004 | US20040021522 Magnetron |