| Patents for H01J 23 - Details of transit-time tubes of the types covered by group (3,921) |
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| 12/23/2009 | CN101609775A Surface-cooling sapphire output window for large-power broadband millimeter wave gyrotron |
| 12/23/2009 | CN100573794C Multi output microwave source of magnetron in medical use, and microwave therapy unit |
| 12/22/2009 | CA2388425C High frequency apparatus |
| 12/16/2009 | CN201365061Y Water-cooled microwave generating device |
| 12/16/2009 | CN101604608A Resonant cavity structure of millimeter wave gyral klystron amplifier |
| 12/15/2009 | US7634062 Circular acceleration apparatus, electromagnetic wave generator and electromagnetic-wave imaging system |
| 12/10/2009 | WO2009149291A2 Coupled cavity traveling wave tube |
| 12/09/2009 | CN101599401A Method for inhibiting oscillation of binode magnetic injection gun region of gyrotron amplifier |
| 11/26/2009 | WO2009115083A3 Rf component and the method thereof for surface finishing |
| 11/26/2009 | WO2009037203A3 Device for dissipating lost heat, and ion accelerator arrangement comprising such a device |
| 11/25/2009 | CN101587812A Electron beam focusing electrode and electron gun using the same |
| 11/25/2009 | CN100562968C Magnetron |
| 11/24/2009 | US7622856 Plasma lighting system having thin metallic film resonator |
| 11/17/2009 | US7619374 Radiotherapy system for performing radiotherapy with presice irradiation |
| 11/12/2009 | WO2009136832A1 Device for the generation of microwaves |
| 11/11/2009 | CN201345340Y Water-cooled magnetron |
| 11/04/2009 | CN101572205A Zigzag slow-wave line of double ridged waveguide |
| 11/03/2009 | US7612342 Very bright scintillators |
| 10/28/2009 | CN101568402A Soldering material, lamp bulb, magnetron and soldering method |
| 10/28/2009 | CN101567291A Magnetron |
| 10/28/2009 | CN100555527C Magnetron |
| 10/28/2009 | CN100555526C Magnetron |
| 10/27/2009 | US7608915 Heat dissipation semiconductor package |
| 10/21/2009 | CN100552861C TWT impregnated Ba-W cathode and its preparation method |
| 10/20/2009 | US7605377 On-chip reflectron and ion optics |
| 10/14/2009 | CN201327810Y Externally-bonded heat pipe soaking type traveling-wave tube heat dissipating device |
| 10/14/2009 | CN100550263C Magnetron |
| 09/24/2009 | WO2009115083A2 Rf component and the method thereof for surface finishing |
| 09/24/2009 | US20090237041 Electric current measurement apparatus, voltage measurement apparatus and power supply apparatus |
| 09/23/2009 | EP2104130A2 Magnetron |
| 09/23/2009 | CN201315302Y Vacuum tube |
| 09/23/2009 | CN101540259A Magnetron |
| 09/22/2009 | US7592746 Photomultiplier |
| 09/16/2009 | CN101533750A Effective radiator structure of millimeter wave traveling wave tube slow-wave system with wide frequency band and realizing method thereof |
| 09/16/2009 | CN101533748A Improved hot shrinkage clamp method in helix line traveling wave tube slow-wave system |
| 09/16/2009 | CN101533747A Method for manufacturing helix line slow-wave system of wide frequency band traveling wave tube |
| 09/15/2009 | US7589469 Coaxial waveguide converter circuit for traveling-wave tube, method of manufacturing same, and waveguide matching part for use in coaxial waveguide converter circuit |
| 09/09/2009 | EP2099054A2 Voltage control, apparatus, power supply apparatus, electron tube and high-frequency circuit system |
| 09/09/2009 | CN201307578Y Vacuum tube |
| 09/09/2009 | CN101527238A Field emission cold cathode |
| 09/08/2009 | US7586264 Collector cooling arrangement |
| 09/02/2009 | EP2096660A2 Magnetron |
| 09/02/2009 | CN201302972Y Cathode component structure of magnetron |
| 09/02/2009 | CN201302971Y Anode component structure of magnetron |
| 09/02/2009 | CN101521133A Focusing coil for klystron |
| 08/26/2009 | EP1485933B1 Magnetron |
| 08/26/2009 | CN100533616C High voltage input apparatus for magnetron |
| 08/25/2009 | US7579779 Pivotable magnetic assembly for allowing insertion or removal of a linear beam tube |
| 08/25/2009 | US7579778 Traveling-wave tube with integrated ion trap power supply |
| 08/20/2009 | WO2009102358A1 Application of wideband sampling for arc detection with a probabilistic model for quantitatively measuring arc events |
| 08/20/2009 | US20090206756 High Intensity and Low Power Signaling Device with Heat Dissipation System |
| 08/18/2009 | US7576499 Sequentially pulsed traveling wave accelerator |
| 08/12/2009 | EP1226601B1 Dual-band rf power tube with shared collector and associated method |
| 08/05/2009 | EP2085999A2 Magnetron |
| 08/05/2009 | CN100524576C Composition for impregnated barium tungsten electrode and preparation method |
| 08/04/2009 | US7569995 Apparatus for magnetic and electrostatic confinement of plasma |
| 07/30/2009 | US20090189528 Illuminating device |
| 07/30/2009 | US20090189527 Magnetron with cathode decoupled from output |
| 07/16/2009 | WO2009089302A1 Grid for vacuum electron device and method for manufacture of same |
| 07/15/2009 | CN100514537C Structure of magnetic pole in magnetron |
| 07/09/2009 | WO2009083215A1 Electronic tube cooling |
| 07/08/2009 | CN100511565C Magnetron for microwave oven |
| 07/02/2009 | DE102008059641A1 UV-Lampensystem sowie zugeordnetes Verfahren mit verbesserter Magnetronsteuerung UV lamp system and associated method with improved Magnetronsteuerung |
| 07/01/2009 | CN100508100C Field emission cold cathode |
| 06/25/2009 | WO2009079538A1 Auxiliary electrodes for enhanced electrostatic discharge |
| 06/25/2009 | WO2009077407A1 Microwave structure for microwave tube beam confinement device with permanent magnets and enhanced cooling |
| 06/25/2009 | CA2709453A1 Microwave frequency structure for microwave tube with beam-containing device with permanent magnets and enhanced cooling |
| 06/24/2009 | EP2073242A2 Tube, especially electron tube |
| 06/24/2009 | CN100505139C Magnetron |
| 06/18/2009 | US20090153055 Magnetron and method of manufacturing magnetron anode vane |
| 06/18/2009 | US20090153011 Injector for betatron |
| 06/18/2009 | US20090153010 Bi-directional dispenser cathode |
| 06/17/2009 | EP2071605A1 Magnetron and method of manufacturing magnetron anode vane |
| 06/16/2009 | US7548026 Magnetron |
| 06/11/2009 | CA2707075A1 Matching a resonant frequency of a resonant cavity to a frequency of an input voltage |
| 06/10/2009 | CN101452802A Choke for magnetron |
| 06/10/2009 | CN101452801A Case for magnetron |
| 06/03/2009 | CN101447384A Multi-level depressurization collector for traveling wave tube |
| 05/26/2009 | US7538608 Photonic crystal ribbon-beam traveling wave amplifier |
| 05/20/2009 | CN100489127C Method for preparing copper pipe for magnetic control pipe |
| 05/12/2009 | US7532451 Electrostatic fluid acclerator for and a method of controlling fluid flow |
| 05/07/2009 | WO2009057239A1 Soldering material, lamp bulb, magnetron and soldering method |
| 05/06/2009 | EP1964146A4 Multi-beam klystron apparatus |
| 05/06/2009 | CN100485855C Heat radiating water jacket for magnetron, and preparation method |
| 04/16/2009 | WO2007130082A3 Plated multi-faceted reflector |
| 04/16/2009 | WO2007130078A3 Coupling energy in a plasmon wave to an electron beam |
| 04/15/2009 | EP2048688A2 Power supply apparatus and high-frequency circuit system |
| 04/15/2009 | CN101409200A Radiation fin structure for magnetron |
| 04/15/2009 | CN101409199A Magnetron with radiating fin spacing structure |
| 04/07/2009 | CA2566985C An electrostatic fluid accelerator for and a method of controlling fluid flow |
| 04/01/2009 | CN101399143A Composition for upper, medium and lower block sheet in magnetrons |
| 04/01/2009 | CN100474492C Magnetron output device |
| 04/01/2009 | CN100474483C Electron beam tube |
| 03/31/2009 | CA2492853C Field emission cold cathode |
| 03/26/2009 | WO2009039128A1 Cooling system for high power vacuum tubes |
| 03/26/2009 | WO2009038279A1 Microwave signal generator |
| 03/25/2009 | CN101393836A Top and bottom board for permatron |
| 03/25/2009 | CN100472703C Magnetron |
| 03/25/2009 | CN100472678C High voltage through capacitor and magnetron |
| 03/18/2009 | EP2037482A2 Magnetron for microwave oven |