| Patents for H01J 23 - Details of transit-time tubes of the types covered by group (3,921) |
|---|
| 08/14/2002 | EP1230662A2 Magnetrons and methods of making them |
| 08/08/2002 | US20020105276 Lighting apparatus using microwave |
| 08/06/2002 | US6429589 Oil-cooled multi-staged depressed collector having channels and dual sleeves |
| 08/06/2002 | CA2188997C Chromatically compensated particle-beam column |
| 07/31/2002 | EP1226601A1 Dual-band rf power tube with shared collector and associated method |
| 07/25/2002 | US20020097121 Permanent magnet radial magnetizer |
| 07/24/2002 | CN1360329A Method for mfg. magnetron |
| 07/17/2002 | EP1222711A1 High frequency apparatus |
| 07/16/2002 | US6420821 Cathode for magnetron |
| 07/09/2002 | US6417622 Broadband, inverted slot mode, coupled cavity circuit |
| 06/27/2002 | US20020081934 Method for making magnetrons |
| 06/26/2002 | EP1217641A1 Method for making magnetrons |
| 06/19/2002 | CN1354491A Preparation method of small multiple injection speed regulating pipe cover-film cathode |
| 06/18/2002 | US6407495 Electron beam tube having particular structure of the vacuum envelope containing electron gun |
| 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 |
| 06/11/2002 | US6404301 Method of forming noise filter for a magnetron |
| 06/06/2002 | WO2001097250A3 Magnetrons and methods of making them |
| 06/05/2002 | EP1155434A4 Crossed-field amplifier with multipactor suppression |
| 06/04/2002 | US6400069 E-M wave generation using cold electron emission |
| 05/29/2002 | CN1085817C Magnetron of microwave oven |
| 05/28/2002 | US6396378 Fine taper adjustment in a magic cylinder |
| 05/23/2002 | US20020060521 Apparatus for bunching relativistic electrons |
| 05/14/2002 | US6388379 Magnetron having a secondary electron emitter isolated from an end shield |
| 05/10/2002 | WO2002037520A1 Traveling wave tube amplifier with reduced sever related applications |
| 05/07/2002 | US6384537 Double loop output system for magnetron |
| 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 |
| 04/10/2002 | CN1082713C Actuator |
| 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 |
| 03/20/2002 | EP1189256A1 Microwave vacuum tube device employing grid-modulated cold cathode source having nanotube emitters |
| 03/19/2002 | US6360084 Dual-band RF power tube with shared collector and associated method |
| 03/14/2002 | US20020030447 Capacitor |
| 03/12/2002 | US6356023 Traveling wave tube amplifier with reduced sever |
| 03/12/2002 | US6356022 Tapered traveling wave tube |
| 03/07/2002 | WO2002019371A1 Vacuum electron device with collector free from magnetic fields |
| 03/06/2002 | EP1184888A1 On-chip vacuum tube device and process for making the device |
| 03/06/2002 | CN1338767A Magnetrons |
| 02/26/2002 | US6351087 Microwave electrodeless discharge lamp apparatus |
| 02/26/2002 | US6351071 Magnetron apparatus and manufacturing method therefor |
| 02/26/2002 | US6351059 Field-emission type cold cathode and application thereof |
| 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 |
| 02/21/2002 | US20020021076 Grids |
| 02/21/2002 | US20020021068 E-m wave generation using cold electron emission |
| 02/19/2002 | CA2124726C High frequency vacuum tube with closely spaced cathode and non-emissive grid |
| 02/07/2002 | WO2002011167A1 Adaptive heater voltage control and monitoring systems and method for setting and maintening the heater voltage of a vacuum electron device |
| 02/07/2002 | US20020014844 Double capacitor |
| 02/05/2002 | US6344962 High voltage capacitor and magnetron |
| 02/05/2002 | US6344709 Microwave electron gun |
| 01/30/2002 | CN1078733C Resonator device |
| 01/24/2002 | US20020008479 Double loop output system for magnetron |
| 01/24/2002 | US20020008478 Oil-cooled multi-staged depressed collector |
| 01/23/2002 | EP1173876A1 Oil-cooled multi-staged collector |
| 01/17/2002 | WO2002005306A1 Tapered traveling wave tube |
| 01/17/2002 | WO2001057906A3 Collector |
| 01/15/2002 | US6339294 Magnetron anode vanes having a face portion oriented towards the anode center |
| 01/15/2002 | CA2118350C Electron beam tube arrangements |
| 01/01/2002 | USH2010 Double cusp gyro gun |
| 12/27/2001 | WO2001046985A3 Magnetron arrangement |
| 12/20/2001 | WO2001097250A2 Magnetrons and methods of making them |
| 12/20/2001 | US20010052825 Magnetrons |
| 12/13/2001 | WO2001041177A3 Production of a microwave device by applying a coating of yttrium-iron-garnet to the surface of the device to suppress secondary electron emission |
| 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 |
| 12/12/2001 | EP1162641A1 Travelling wave tube and method for fabricating three dimensional travelling wave tube circuit elements using photolithography |
| 12/11/2001 | US6329753 M-type microwave device with slanted field emitter |
| 12/06/2001 | WO2001093295A1 Manufacture of field emitters for a magnetron |
| 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 |
| 11/27/2001 | US6324041 Protection circuit for traveling wave tubes having multiple input tones |
| 11/22/2001 | WO2001088945A1 Broadband, inverted slot mode, coupled cavity circuit |
| 11/22/2001 | WO2001061723A8 Voltage reducing means for linear beam device having multi-stage depressed collector |
| 11/21/2001 | EP1155434A1 Crossed-field amplifier with multipactor suppression |
| 11/21/2001 | CN1075228C High voltage noise filter and magnetron device using the same |
| 11/20/2001 | US6320315 Ceramic electron collector assembly having metal sleeve for high temperature operation |
| 11/14/2001 | EP1153408A1 Field emitter array with enhanced performance |
| 11/14/2001 | CN1074854C High frequency equipment |
| 11/06/2001 | US6313710 Interaction structure with integral coupling and bunching section |
| 11/01/2001 | US20010036053 High voltage capacitor and magnetron |
| 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 |
| 10/16/2001 | US6304033 Electron beam tube having a DC power lead with a damping structure |
| 10/16/2001 | US6304024 Impregnated-type cathode substrate with large particle diameter low porosity region and small particle diameter high porosity region |
| 10/11/2001 | WO2001075928A1 Magnetrons |
| 10/11/2001 | US20010028542 Load protection system in a power modulator |
| 10/10/2001 | CN1316753A High-voltage capacitor and magnetron |
| 10/09/2001 | US6300715 Very high power radiofrequency generator |
| 10/04/2001 | EP1139377A1 Magnetrons |
| 10/02/2001 | US6297592 Microwave vacuum tube device employing grid-modulated cold cathode source having nanotube emitters |
| 09/27/2001 | WO2001071762A1 Grooved multi-stage depressed collector for secondary electron suppression |