Patents
Patents for H01J 23 - Details of transit-time tubes of the types covered by group (3,921)
04/1998
04/16/1998WO1998015968A1 Device for quick microwave tube frequency tuning and microwave tube provided with same
04/16/1998CA2245516A1 Device for quick microwave tube frequency tuning and microwave tube provided with same
04/07/1998US5736820 For use with a linear electron beam tube
04/01/1998EP0833359A2 Field emission cathode type electron gun with individually-controlled cathode segments
03/1998
03/26/1998DE19649861C1 Cathode heating regulation method for high frequency generator tube
03/25/1998EP0831513A1 Emissive heat radiator
03/25/1998EP0831512A1 Impregnated cathode structure, cathode substrate used for the structure, electron gun structure using the cathode structure, and electron tube
03/19/1998WO1998011591A1 Method and device for controlling a magnetron filament current
03/18/1998CN1176479A Terminal cap parts for magnetron and its producing method
03/10/1998US5726533 Cathode ray tube having an input resonator cavity
03/04/1998EP0827175A1 Field-emission cold-cathode electron gun
03/03/1998US5723948 Helix travelling-wave tube with a maximum small signal gain at the operating voltage
02/1998
02/25/1998EP0824758A1 Grid electron gun
02/17/1998US5719470 Gyrotron capable of outputting a plurality of wave beams of electromagnetic waves
02/04/1998CN1172340A High frequency oscillator
01/1998
01/28/1998EP0745266A4 Chromatically compensated particle-beam column
01/27/1998US5711860 Method and apparatus for producing a substrate with low secondary electron emissions
01/22/1998DE19628770A1 Travelling wave tube amplifier power output variation method
01/20/1998US5709577 Method of making field emission devices employing ultra-fine diamond particle emitters
01/14/1998EP0711451B1 Device for attenuating interfering waves in an electron tube and electron tube comprising same
01/13/1998US5708356 Apparatus for supplying stabilized power to a load having voltage-current characteristics exhibiting partial negative resistance
12/1997
12/31/1997CN1169062A High voltage noise filter and magnetron device using it
12/17/1997CN1168000A Actuator
12/16/1997US5698949 Hollow beam electron tube having TM0x0 resonators, where X is greater than 1
12/02/1997US5694005 Plasma-and-magnetic field-assisted, high-power microwave source and method
11/1997
11/27/1997WO1997044805A1 Multi-stage electron gun having an electrostatic cavity
11/27/1997WO1997044804A1 Electron gun having multiple emitting sections for generating multiple electron bunches
11/27/1997CA2254137A1 Electron gun having multiple emitting sections for generating multiple electron bunches
11/27/1997CA2254132A1 Multi-stage electron gun having an electrostatic cavity
11/26/1997EP0809271A2 Electron gun
11/26/1997EP0758485A4 Selectively shaped field emission electron beam source, and phosphor array for use therewith
11/25/1997US5691667 RF radiation absorbing material disposed between the cathode and anode of an electron beam tube
11/25/1997US5691602 Multiple cavity klystron
11/22/1997CA2205989A1 Electron gun
11/19/1997CN1165392A Magnetron
11/11/1997US5686007 Microwave oven magnetron with slit filament terminal
11/04/1997US5684364 Electron beam tube collector having ceramic shielding means
10/1997
10/28/1997US5682084 Grid electron tube with a folded cavity structure
10/22/1997EP0802557A1 Collector for an electron beam tube
10/22/1997CN1162832A Cathode assembly of magnetron
10/21/1997US5680012 Magnetron with tapered anode vane tips
10/21/1997US5680011 Cold cathode density-modulated type electron gun and microwave tube using the same
10/16/1997WO1997038437A1 Resonant cavity for attenuating electromagnetic standing waves in a waveguide
10/16/1997WO1997038436A1 Single-beam and multiple-beam klystrons using periodic permanent magnets for electron beam focusing
10/14/1997US5676873 Microwave oven and magnetron with cold cathode
10/01/1997EP0798950A2 High voltage noise filter and magnetron device using it
10/01/1997EP0417205B1 High performance extended interaction output circuit
09/1997
09/24/1997EP0797234A1 Magnetron
09/17/1997CN1159728A Antenna feeder of magnetron for electromagnetic range and assembling structure of exhausting tube
09/16/1997US5668442 Plasma-assisted tube with helical slow-wave structure
09/10/1997CN1035848C Method of manufacturing filter section of magnetron
08/1997
08/27/1997EP0791947A1 A magnetron
08/27/1997EP0593768B1 Magnetron
08/20/1997CN1157470A Magnetron
08/20/1997CN1035712C Inductive output vacuum-tube amplifier
08/19/1997US5658181 Die and method for applying radial forces to an eccentric workpiece
08/06/1997EP0788184A2 Cavity coupler actuator
07/1997
07/29/1997US5652554 Quasi-optical coupler with reduced diffraction
07/22/1997US5650751 Inductive output tube with multistage depressed collector electrodes providing a near-constant efficiency
07/15/1997US5649310 Signal translation and amplification system including a thermal radiation panel coupled thereto
07/08/1997US5646585 Tunable cavity resonator for a multi-cavity klystron
07/02/1997EP0781454A1 Frequency tunable magnetron
06/1997
06/25/1997CN1152789A Linear electron-beam tube structure
06/24/1997US5642268 Power supply for a magnetron having controlled output power and narrow bandwidth
06/18/1997CN1152185A Magnetron
06/10/1997US5637957 Cathode-anode spacer comprising a projection of a length limited relative to its distance to the cathode
06/03/1997US5635798 Magnetron with reduced dark current
06/03/1997US5635797 Magnetron with improved mode separation
05/1997
05/15/1997DE19542311A1 Travelling wave tube with delay line
05/13/1997US5629582 Thermally stable electron gun arrangement with electrically non-conductive spacer members
05/07/1997EP0772218A2 Linear beam microwave tube with planar cold cathode as an electron beam source
05/07/1997CN1149194A Inductive output tube arrangements
05/02/1997EP0770264A1 Magnetic system for gyrotrons
04/1997
04/23/1997EP0769797A2 Magnetron
04/17/1997DE19532785C1 Gyrotron with continuously variable frequency
04/15/1997US5621269 Cathode assembly of a magnetron
04/09/1997EP0767480A2 Helix travelling-wave tube
04/02/1997CN1146621A Liner electron-beam tube
04/01/1997US5616368 Field emission devices employing activated diamond particle emitters and methods for making same
03/1997
03/26/1997EP0764391A1 High temperature superconductor dielectric slow wave structures for accelerators and traveling wave tubes
03/26/1997EP0764339A2 HOLLOW BEAM ELECTRON TUBE HAVING TM 0x0? RESONATORS, WHERE x IS GREATER THAN 1
03/11/1997US5610482 Gyrotron and method of improving its efficiency
02/1997
02/25/1997US5606221 Electron beam tubes having a resonant cavity with high frequency absorbing material
02/19/1997EP0758485A1 Selectively shaped field emission electron beam source, and phosphor array for use therewith
02/18/1997US5604405 Magnetron with feed-through capacitor having a dielectric constant effecting a decrease in acoustic noise
02/18/1997US5604402 Harmonic gyro traveling wave tube having a multipole field exciting circuit
02/18/1997US5604401 Field-emission cold cathode for dual-mode operation useable in a microwave tube
02/04/1997US5600207 Preferentially cooled forward wave crossed-field amplifier anode
01/1997
01/15/1997EP0753879A2 Inductive output tube arrangements
01/15/1997EP0753878A1 Linear electron beam tubes arrangements
01/15/1997EP0753877A2 Linear electron beam tubes
01/13/1997CA2181101A1 Linear electron beam tube arrangements
01/13/1997CA2181100A1 Linear electron beam tube
01/11/1997CA2180803A1 Universal magnetron assembly for microwave oven
01/11/1997CA2180491A1 Inductive output tube arrangements
01/09/1997WO1996032735A3 HOLLOW BEAM ELECTRON TUBE HAVING TM0x0 RESONATORS, WHERE x IS GREATER THAN 1
12/1996
12/31/1996US5589736 Frequency multiplier including grid having plural segments
12/27/1996WO1996042100A1 Impregnated cathode structure, cathode substrate used for the structure, electron gun structure using the cathode structure, and electron tube
12/27/1996EP0749631A1 Compact microwave source for exciting electrodeless lamps
12/17/1996US5585689 Field-emission cathode having integrated electrical interconnects and electron tube using the same
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