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