Patents
Patents for H01J 25 - Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons (1,999)
01/2005
01/05/2005CN1559631A Medical microwave magnetron and medical microwave therapeutic machine
12/2004
12/30/2004US20040262304 Magnetron
12/30/2004US20040262302 Magnetron with evaporation baffle
12/29/2004WO2003077273A3 High power density collector
12/15/2004EP1485933A1 Magnetron
12/15/2004EP1485932A1 Magnetron arrangements
12/14/2004US6831416 Inductive compensator for magnetron
12/09/2004WO2004107382A1 Millimeter-wave backward wave oscillator
12/09/2004US20040245933 Method and apparatus for generation and frequency tuning of modulated, high current electron beams
12/09/2004US20040245932 Microwave generator with virtual cathode
12/02/2004US20040239255 Magnetron
12/01/2004EP1482531A2 Magnetron
11/2004
11/30/2004US6825621 Electron gun for color cathode ray tube
11/18/2004WO2004100353A2 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
11/18/2004US20040227468 Klystron-type devices
11/11/2004US20040222744 Vacuum tube electrode structure
11/11/2004DE102004009881A1 Mikrowellenbetriebener Leuchtkopf mit einem externen Verschluss Microwave-powered lamp head with an external shutter
11/09/2004US6815897 Magnetrons having a coaxial line output with unwanted mode energy reduction
10/2004
10/21/2004WO2004090929A1 Anode for magnetron in microwave oven, manufacturing method of the same and forming apparatus for thereof
10/21/2004US20040206754 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
10/21/2004US20040206751 Low-noise, crossed-field devices such as a microwave magnetron having an azimuthally-varying axial magnetic field and microwave oven utilizing same
10/07/2004WO2004049378A3 Vacuum tube electrode structure
10/05/2004US6801107 Vacuum electron device with a photonic bandgap structure and method of use thereof
09/2004
09/30/2004US20040189210 Multilayer field emission klystron
09/23/2004US20040183481 Microwave powered lamphead having external shutter
09/09/2004US20040174211 Inductive output tube having a broadband circuit
09/08/2004CN1165943C 磁控管 Magnetron
09/07/2004US6787998 Inner conductor for a co-axial gyrotron with axial corrugations which are evenly distributed around the periphery
09/02/2004US20040169554 Device for amplifying a high frequency signal
08/2004
08/26/2004WO2004044943A3 Retarding electron beams in multiple electron beam pattern generation
08/25/2004EP1449229A1 Phased array source of electromagnetic radiation
08/24/2004US6781314 Magnetron
08/19/2004US20040160162 Microdischarge devices and arrays
08/17/2004US6777876 Power-supply unit for microwave tube
08/12/2004US20040154526 Free-standing diamond structures and methods
08/11/2004EP1444715A2 Microwave generator with virtual cathode
08/10/2004US6774568 Magnetron for microwave oven
08/04/2004EP1442470A1 Electron beam tube apparatus
08/04/2004CN1518037A Anode and magnetron with the anode
07/2004
07/28/2004EP1441378A2 Anode and magnetron therewith
07/28/2004CN2629211Y 高真空磁控管 High vacuum magnetron
07/27/2004US6768267 Cathode ray tube with efficiently driven electron gun
07/27/2004US6768265 Electron gun for multiple beam klystron using magnetic focusing
07/22/2004WO2004006281A3 Method and apparatus for magnetic focusing of off-axis electron beam
07/22/2004US20040140207 Anode and magnetron therewith
07/06/2004US6759639 Magnetron for microwave ovens
06/2004
06/29/2004US6756735 Magnetron and method for joining magnetron components
06/29/2004US6756734 Electron tube device mounted with a cold cathode and a method of impressing voltages on electrodes of the electron tube device
06/24/2004WO2004021611A3 Wireless communication system with high efficiency/high power optical source
06/24/2004US20040118841 Magnetron and microwave oven and high frequency heating apparatus each equipped with the same
06/24/2004US20040118840 Device for producing high frequency microwaves
06/23/2004CN1506999A Magnetron and microwave oven and high-frequency heating equipment equiped with the same magnetron
06/23/2004CN1506998A Magnetron and microwave oven and high frequency heating device mounted with the same magnetron respectively
06/22/2004US6753662 Intense and compact THz radiation source
06/17/2004US20040113560 Magnetron
06/16/2004EP1429365A2 Magnetron, and microwave oven and high-frequency heating apparatus each equipped with the same
06/10/2004WO2004049378A2 Vacuum tube electrode structure
06/10/2004US20040108816 Magnetron, and microwave oven and high-frequency heating apparatus each equipped with the same
06/09/2004EP1426996A2 Magnetron and microwave oven and high frequency heating apparatus each equipped with the same
06/09/2004CN1503304A Magnetron for microwave oven
06/09/2004CN1503301A Magnetron and method for connecting magnetron elements
06/08/2004US6747412 Traveling wave tube and method of manufacture
06/03/2004US20040104679 Pulse magnetron
06/02/2004EP1423913A1 Device for amplifying a high frequency signal
06/02/2004CN1501430A Pulse magnetron
06/02/2004CN1152410C Full-metallic spiral slow-wave structure
05/2004
05/27/2004WO2004044943A2 Retarding electron beams in multiple electron beam pattern generation
05/27/2004US20040100199 Magnetron for microwave oven
05/26/2004EP1422738A2 Magnetron for microwave oven
05/26/2004EP1422737A2 Magnetron and method for joining magnetron components
05/20/2004US20040095073 Magnetron and method for joining magnetron components
05/19/2004CN1497646A 磁控管 Magnetron
05/13/2004US20040090194 Retarding electron beams in multiple electron beam pattern generation
05/12/2004CN1149614C Anode structure and magnetrons
04/2004
04/28/2004CN1147909C Plate-type magnetron
04/21/2004CN2613042Y Magnetron with stable output power
04/20/2004US6724146 Phased array source of electromagnetic radiation
04/06/2004US6717365 Magnetron
04/01/2004US20040061562 Magnetron
04/01/2004US20040060933 Magnetron for microwave ovens
03/2004
03/31/2004EP1403900A2 Magnetron for microwave ovens
03/31/2004EP1403899A2 Magnetron for microwave ovens
03/31/2004CN1485878A Magnetron for microwave ovens
03/11/2004WO2004021611A2 Wireless communication system with high efficiency/high power optical source
03/03/2004CN1479344A Coating layer shielded magnetron
03/03/2004CN1479343A Large power quadrupole delectronic tube and its manufacturing method
02/2004
02/26/2004WO2003030204A3 Microwave generator with virtual cathode
02/25/2004EP1391909A2 Magnetron
02/25/2004EP1391908A2 Magnetron for microwave ovens
02/25/2004CN1477673A 磁控管 Magnetron
02/24/2004US6695664 Microdischarge devices and arrays
02/18/2004CN1139095C Equalizer ring in magnetron
02/18/2004CN1139094C Magnetron
02/17/2004US6693378 Magnetron for microwave ovens
02/11/2004EP1388880A2 Magnetron for microwave ovens
02/11/2004EP1388879A2 Magnetron
02/11/2004CN1474431A Magnetron for microwave oven
02/11/2004CN1474430A 磁控管 Magnetron
02/11/2004CN1474429A Magnetron of microwave oven
02/05/2004US20040021522 Magnetron
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