Patents for H01J 25 - Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons (1,999) |
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11/27/2002 | EP1259973A1 Transducer with field emitter array |
11/26/2002 | US6486605 Multibeam electronic tube with magnetic field for correcting beam trajectory |
11/26/2002 | US6486604 Traveling-wave valve arrangement |
11/21/2002 | DE10105441C1 Kollektorwand und Kollektorspulengruppe eines Gyrotrons Wall collector and collector coil group a gyrotron |
11/19/2002 | US6483243 Multiband travelling wave tube of reduced length capable of high power functioning |
11/14/2002 | US20020167276 Traveling wave tube and method of manufacture |
11/05/2002 | US6476558 Mode converter and gyrotron tube provided with mode converter for converting mode of millimeter waves |
10/23/2002 | EP1251544A1 Microwave amplifier electron tube with miniature entry plug and method of fabrication |
10/16/2002 | EP1249030A2 Magnetron anodes |
10/15/2002 | US6465958 Electron beam tubes |
10/15/2002 | CA2267710C Low impedance grid-anode interaction region for an inductive output amplifier |
10/03/2002 | US20020140356 Optical magnetron for high efficiency production of optical radiation |
10/01/2002 | CA2254677C Apparatus for sputtering or arc evaporation |
09/19/2002 | DE10111817A1 Vorrichtung zur Erzeugung von Mikrowellen hoher Frequenz Device for generating microwaves of high frequency |
09/12/2002 | WO2002071435A1 Device for producing high frequency microwaves |
08/29/2002 | WO2000054305A9 Laser-assisted field emission microwave signal generator |
08/22/2002 | WO2002065504A1 Magnetron |
08/20/2002 | US6437511 Magnetron having choke structures with a gap spacing therebetween |
08/20/2002 | US6437510 Crossed-field amplifier with multipactor suppression |
08/15/2002 | WO2002063652A1 Collector wall and collector coil group for a gyrotron |
08/14/2002 | EP1230662A2 Magnetrons and methods of making them |
08/01/2002 | US20020101161 Electron gun for color cathode ray tube |
07/31/2002 | EP1226601A1 Dual-band rf power tube with shared collector and associated method |
07/24/2002 | CN1360079A Secondary-emission rare earth-molybdenum material and its preparing process |
07/23/2002 | US6424090 Modification of millimetric wavelength microwave beam power distribution |
07/09/2002 | US6417622 Broadband, inverted slot mode, coupled cavity circuit |
06/19/2002 | EP1214276A1 Joining of cvd diamond bodies to metal structures |
06/13/2002 | US20020070671 Optical magnetron for high efficiency production of optical radiation, and 1/2 lambda induced pi-mode operation |
06/13/2002 | US20020070108 Magnetron |
06/06/2002 | WO2001097250A3 Magnetrons and methods of making them |
06/05/2002 | EP1155434A4 Crossed-field amplifier with multipactor suppression |
05/29/2002 | CN1085817C Magnetron of microwave oven |
05/23/2002 | US20020060521 Apparatus for bunching relativistic electrons |
05/14/2002 | US6388379 Magnetron having a secondary electron emitter isolated from an end shield |
05/01/2002 | CN1347132A Full-metallic spiral slow-wave structure |
04/30/2002 | US6380803 Linear amplifier having discrete resonant circuit elements and providing near-constant efficiency across a wide range of output power |
04/18/2002 | US20020043937 Magnetron having a lowered oscillation frequency and processing equipment employing the same |
04/16/2002 | US6373194 Optical magnetron for high efficiency production of optical radiation |
04/11/2002 | WO2002029843A1 Carbon-based field emission electron device for high current density applications |
04/09/2002 | US6369511 Travelling-wave tube amplifier |
03/28/2002 | WO2002025684A1 Magnet, vacuum electron devices and communication systems |
03/28/2002 | US20020036470 Electron tube device mounted with a cold cathode and a method of impressing voltages on electrodes of the electron tube device |
03/19/2002 | US6360084 Dual-band RF power tube with shared collector and associated method |
03/13/2002 | EP1186079A2 Miniaturized terahertz radiation source |
03/06/2002 | EP1184888A1 On-chip vacuum tube device and process for making the device |
03/06/2002 | CN1338767A Magnetrons |
02/26/2002 | US6350356 Linear magnetron arc evaporation or sputtering source |
02/26/2002 | CA2225121C Microwave oven equipped with a structurally simple apparatus for generating a microwave frequency energy |
02/21/2002 | WO2002015217A1 Inner conductor for a coaxial gyrotron with axial corrugations which are evenly distributed around the periphery |
02/21/2002 | US20020021095 Mode converter and gyrotron tube provided with mode converter for converting mode of millimeter waves |
02/19/2002 | CA2124726C High frequency vacuum tube with closely spaced cathode and non-emissive grid |
02/07/2002 | US20020014844 Double capacitor |
01/30/2002 | CN1078733C Resonator device |
01/15/2002 | US6339294 Magnetron anode vanes having a face portion oriented towards the anode center |
01/15/2002 | CA2225038C Structurally simple apparatus for generating a microwave frequency energy |
01/15/2002 | CA2118350C Electron beam tube arrangements |
01/03/2002 | WO2002001593A1 Broadband power micro-wave tube |
12/27/2001 | WO2001046985A3 Magnetron arrangement |
12/20/2001 | WO2001097250A2 Magnetrons and methods of making them |
12/20/2001 | US20010052825 Magnetrons |
12/13/2001 | DE10104935A1 High frequency oscillator tube has electron beam passing through resonator twice transversely, first at electric field antinode and second at magnetic field antinode or vice-versa |
12/13/2001 | DE10040320C1 Inner conductor for coaxial gyrotron provided with impedance corrugations of varying depth between input funnel and output funnel of resonator center piece |
12/11/2001 | US6329753 M-type microwave device with slanted field emitter |
12/06/2001 | WO2001046981A3 Magnetron anodes |
12/05/2001 | EP1159753A1 Multiple beam electronic tube with minimal electron interception |
12/04/2001 | US6326730 Low-power wide-bandwidth klystron |
12/04/2001 | US6326729 Field emission cathode and electromagnetic wave generating apparatus comprising the same |
11/22/2001 | WO2001088945A1 Broadband, inverted slot mode, coupled cavity circuit |
11/21/2001 | EP1155434A1 Crossed-field amplifier with multipactor suppression |
11/06/2001 | US6313710 Interaction structure with integral coupling and bunching section |
10/31/2001 | CN1319869A 磁控管 Magnetron |
10/30/2001 | US6310438 Electron tube device mounted with a cold cathode and a method of impressing voltages on electrodes of the electron tube device |
10/17/2001 | EP1145268A2 Multiband travelling wave tube of reduced length capable of high power functioning |
10/11/2001 | WO2001075928A1 Magnetrons |
10/09/2001 | US6300715 Very high power radiofrequency generator |
10/04/2001 | EP1139377A1 Magnetrons |
09/27/2001 | US20010024091 Electron tube device mounted with a cold cathode and a method of impressing voltages on electrodes of the electron tube device |
09/12/2001 | EP1131840A1 Low-power wide-bandwidth klystron |
09/04/2001 | US6283812 Process for fabricating article comprising aligned truncated carbon nanotubes |
08/16/2001 | WO2001059802A1 Transducer with field emitter array |
08/16/2001 | US20010013757 Broadband, inverted slot mode, coupled cavity circuit |
08/15/2001 | CN1308769A Multibeam electronic tube with magnetic field for correcting beam trajectory |
08/09/2001 | US20010011924 Linear amplifier having discrete resonant circuit elements and providing near-constant efficiency across a wide range of output power |
08/01/2001 | CN1306294A Magnetron |
07/04/2001 | EP1113481A1 Magnetron |
06/28/2001 | WO2001046985A2 Magnetron arrangement |
06/28/2001 | WO2001046981A2 Magnetron anodes |
06/27/2001 | CN1301033A Electromagnetic wave generator |
06/27/2001 | CN1067798C Grid electron tube with improved performance characteristics |
06/26/2001 | US6250984 Article comprising enhanced nanotube emitter structure and process for fabricating article |
06/21/2001 | US20010004192 Magnetron |
06/12/2001 | US6246295 Planar radiation oscillator apparatus |
05/30/2001 | CN2432677Y MIcrowave magnetron with more than two-way output power |
05/22/2001 | US6236161 Crossed-field device |
05/15/2001 | US6232721 Inductive output tube (IOT) amplifier system |
05/10/2001 | WO2001033599A1 Dual-band rf power tube with shared collector and associated method |
05/09/2001 | CN1294750A Magnetron |
05/09/2001 | CN1065649C 磁控管 Magnetron |
05/09/2001 | CN1065648C 磁控管 Magnetron |
05/02/2001 | EP1095390A1 Multibeam electronic tube with magnetic field for correcting beam trajectory |