Patents
Patents for H01J 25 - Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons (1,999)
07/1995
07/18/1995US5433640 Cylinder cathodes of nickel alloys and anode vanes, cleaning cylinders and spraying emissive material
06/1995
06/28/1995CN1104414A Electron beam tubes
06/21/1995CN1103992A Electron beam tubes
06/14/1995CN1103733A Electron beam tube arrangements
06/06/1995US5422596 High power, broadband folded waveguide gyrotron-traveling-wave-amplifier
06/06/1995US5422542 Low power pulsed anode magnetron for improving spectrum quality
05/1995
05/23/1995US5418427 Internally cooled forward wave crossed field amplifier anode vane
05/10/1995EP0652580A1 Linear electron beam tube arrangements
05/02/1995US5412282 Radiation fin structure of a magnetron
03/1995
03/21/1995US5399938 Anode assembly for a magnetron covered by an oxygen free copper film
03/21/1995US5399937 Starfish bunched electron beam converter
03/09/1995DE4431337A1 Röhre mit induktiver Auskopplung mit mehrstufigen Bremsfeldkollektor-Elektroden Tube with inductive coupling with multi-stage depressed collector electrodes
02/1995
02/21/1995US5391964 Magnetron yoke joint having bent joining lugs
02/15/1995CN1098817A Electron beam tubes
02/08/1995EP0637832A1 Electron beam devices
02/08/1995EP0413018B1 Hyperfrequency wave generator device with virtual cathode
02/07/1995US5387881 Atomic frequency standard
01/1995
01/31/1995US5386177 Plasma klystron amplifier
01/31/1995US5384951 Method of making anisotropically loaded helix assembly for a traveling-wave tube
01/26/1995DE4424135A1 Measuring device for electromagnetic waves
01/26/1995DE4423532A1 Method for producing a screw-shaped line with wings coupled thereto, line which is produced using the method, and electron tube which contains such a line
01/04/1995EP0632481A1 Electron beam tubes
12/1994
12/28/1994EP0593768A4 Magnetron.
12/20/1994US5374873 Gyrotron apparatus having vibration absorbing means
12/13/1994US5373263 Transverse mode electron beam microwave generator
12/08/1994WO1994024690A3 Electron beam tubes
12/07/1994EP0627757A2 High frequency vacuum tube with closely spaced cathode and non-emissive grid
12/01/1994DE4417803A1 Elektronenstrahlröhren CRT
11/1994
11/15/1994US5365186 Proton maser
11/08/1994US5363054 Double beam cyclotron maser
11/08/1994US5363016 Cooled reentrant TWT ladder circuit having axially raised cooling bars
11/08/1994CA2039372C Microwave oven with invertor control power source
10/1994
10/27/1994WO1994024690A2 Electron beam tubes
10/20/1994DE4411944A1 Elektronenstrahlröhrenanordnungen Cathode ray tube assemblies
10/11/1994US5355380 Compact millimeter wave source
08/1994
08/23/1994US5341066 Anisotropically loaded helix assembly for a traveling-wave tube
07/1994
07/26/1994US5332948 X-z geometry periodic permanent magnet focusing system
07/21/1994WO1994016338A1 High frequency scan converter
07/19/1994US5331248 Cooling apparatus of magnetron
06/1994
06/22/1994EP0364574B1 Plasma-assisted high-power microwave generator
06/21/1994US5323086 Klystron having a vacuum gate valve disposed in a drift tube
06/16/1994DE4342071A1 TWT amplifier with collector operated below equipment potential - includes interaction circuit with delay stage and coupled cavity resonator ahead of multistage collector of beamed electrons
06/07/1994US5319322 Electron beam antenna microwave generation device
05/1994
05/31/1994US5317233 Vacuum tube including grid-cathode assembly with resonant slow-wave structure
05/24/1994US5315210 Klystron resonant cavity operating in TM01X mode, where X is greater than zero
05/11/1994WO1994010699A1 Method of increasing and/or ensuring the efficiency of a gyrotron, and a gyrotron designed to carry out the method
05/04/1994EP0594832A1 Tm01x mode (x 0) klystron resonant cavity
04/1994
04/27/1994EP0593768A1 Magnetron
04/19/1994US5304942 Extended interaction output circuit for a broad band relativistic klystron
04/13/1994EP0591579A1 Cooled coupled-actovity TWT circuit
03/1994
03/30/1994EP0589019A1 Magnetron
03/16/1994EP0587481A1 Radial electron tube
03/15/1994US5294864 Magnetron for microwave oven
02/1994
02/01/1994US5283534 High frequency amplifying apparatus with a collector which has a periodic amplitude variable longitudinal magnetic field therein
01/1994
01/25/1994US5281894 For producing a flow of electrons
01/18/1994US5280216 Mode converter and power splitter for microwave tubes
12/1993
12/29/1993EP0403583B1 Plasma wave tube and method
12/08/1993CN1079346A Atomic frequency standard
12/08/1993CN1079335A Electron beam device
11/1993
11/30/1993US5266868 Gyrotron including quasi-optical mode converter
11/25/1993WO1993023867A1 Tm01x mode (x>0) klystron resonant cavity
10/1993
10/28/1993WO1993021648A1 Magnetron
10/28/1993WO1993021647A1 Magnetron
10/06/1993EP0563543A1 Electron beam device
09/1993
09/22/1993EP0561261A1 Atomic frequency standard
08/1993
08/24/1993US5239235 Multiple-beam microwave tube with coaxial output and coaxial collector
08/11/1993CN1075232A Anode assembly for a magnetron
08/10/1993US5235249 Multiple-beam microwave tube with groups of adjacent cavities
08/10/1993US5235248 Method and split cavity oscillator/modulator to generate pulsed particle beams and electromagnetic fields
08/03/1993US5233269 Vacuum tube with an electron beam that is current and velocity-modulated
08/03/1993US5232902 Method and apparatus for modulating relativistic electron beams to produce microwaves using a superconducting passage
07/1993
07/28/1993CN1074797A Fixing device for antenna feed line of magnetron
07/27/1993US5231330 Digital helix for a traveling-wave tube and process for fabrication
07/27/1993US5231073 Microwave/far infrared cavities and waveguides using high temperature superconductors
07/13/1993US5227701 Gigatron microwave amplifier
07/07/1993CN1074061A Magnetron for microwave oven
07/06/1993US5225739 Klystron with cavities arranged in different blocks for providing widened instantaneous passband
06/1993
06/30/1993CN1073802A Vane and strap ring ring assembly of a magnetron
06/09/1993EP0400089B1 Improved plasma wave tube
05/1993
05/26/1993CN1020987C Quasi-optical gyrotron
03/1993
03/23/1993US5196765 High RF isolation crossed-field amplifier
03/17/1993CN1070063A High voltage capacitor and magnetron
02/1993
02/17/1993EP0522153A4 Gyrotron with radial beam extraction
02/16/1993US5187409 Gyrotron having a quasi-optical mode converter
02/16/1993US5187408 Quasi-optical component and gyrotron having undesired microwave radiation absorbing means
01/1993
01/26/1993US5182493 Rising sun magnetron with planar tuning member protruding into only one set of cavities
01/19/1993US5180944 Gyrotron with a mode convertor which reduces em wave leakage
01/13/1993EP0522153A1 Gyrotron with radial beam extraction.
12/1992
12/30/1992EP0520229A2 Microwave tube
12/23/1992EP0519803A1 Strapped magnetron with frequency stabilisation
12/23/1992CN1019621B Concentricity adjusting technology for cathode and anode of magnetron
12/16/1992EP0518368A2 Gyrotron apparatus
11/1992
11/17/1992US5164634 Electron beam device generating microwave energy via a modulated virtual cathode
11/11/1992EP0512451A2 A cooling apparatus of magnetron
11/10/1992US5162747 Velocity modulation microwave amplifier with multiple band interaction structures
11/10/1992US5162698 Cascaded relativistic magnetron
11/10/1992US5162697 Traveling wave tube with gain flattening slow wave structure
11/10/1992CA1310123C High performance extended interaction output circuit
11/04/1992CN1018966B Quasi-optical gyrotron
10/1992
10/27/1992US5159241 Single body relativistic magnetron
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