| Patents for H01J 25 - Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons (1,999) |
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| 02/05/2004 | US20040021422 Magnetron |
| 02/05/2004 | US20040021421 Magnetron for microwave ovens |
| 02/05/2004 | US20040020924 Magnetron for microwave ovens |
| 02/04/2004 | CN1472767A 磁控管 Magnetron |
| 01/29/2004 | US20040016753 Magnetron for microwave ovens |
| 01/28/2004 | EP1385191A1 Magnetron |
| 01/28/2004 | CN1471125A Magnetron for microwave oven |
| 01/22/2004 | US20040012349 Magnetron |
| 01/22/2004 | US20040012335 Magnetron |
| 01/22/2004 | US20040011506 Cooling device for an electron tube |
| 01/21/2004 | EP1383154A1 Magnetron |
| 01/21/2004 | EP1034556B1 Electron beam tubes |
| 01/21/2004 | CN1469413A 磁控管 Magnetron |
| 01/21/2004 | CN1135595C Temperature measuring device for magnetron of microwave oven |
| 01/15/2004 | WO2004006281A2 Method and apparatus for magnetic focusing of off-axis electron beam |
| 01/15/2004 | US20040007959 Method and apparatus for magnetic focusing of off-axis electron beam |
| 01/08/2004 | US20040004439 High frequency heating device |
| 12/30/2003 | US6670762 Magnetron apparatus |
| 12/30/2003 | US6670761 Magnetron having straps of different materials to enhance structural stability |
| 12/24/2003 | WO2003106264A1 Cooling device for space craft |
| 12/18/2003 | WO2003105179A1 Inductive outputtube (10t) amplifier system |
| 12/17/2003 | CN1131330C Secondary-emission dual rare earth-molybdenum material and its preparing process |
| 12/16/2003 | US6664734 Traveling-wave tube with a slow-wave circuit on a photonic band gap crystal structures |
| 12/10/2003 | EP1369892A2 Broadband, inverted slot mode, coupled cavity circuit |
| 12/03/2003 | EP1366504A1 Magnetron |
| 11/26/2003 | EP1364382A1 Device for producing high frequency microwaves |
| 11/25/2003 | US6653788 Magnetron having a lowered oscillation frequency and processing equipment employing the same |
| 11/25/2003 | US6653787 High power density multistage depressed collector |
| 11/19/2003 | EP1362358A1 Collector wall and collector coil group for a gyrotron |
| 11/06/2003 | US20030205960 Phased array source of electromagnetic radiation |
| 10/29/2003 | CN1452208A 磁控管 Magnetron |
| 10/23/2003 | US20030197471 Magnetron |
| 10/22/2003 | EP1355340A2 Magnetron |
| 10/22/2003 | CN1125477C Magnetrons |
| 10/15/2003 | CN1124634C Magnetron |
| 10/14/2003 | US6633131 Magnetron |
| 10/08/2003 | CN1123907C Structurally simple appts. for generating microwave frequency energy |
| 10/02/2003 | WO2003081628A1 An unsymmetrical-dielectric loaded helical structure with negative dispersion characteristics and a wideband travelling-wave tube using the same |
| 10/02/2003 | US20030184232 Power-supply unit for microwave tube |
| 09/25/2003 | WO2003079394A1 Magnetron |
| 09/25/2003 | WO2003079393A1 Magnetron arrangements |
| 09/24/2003 | CN1122295C Electromagnetic wave generator |
| 09/18/2003 | WO2003077273A2 High power density collector |
| 09/11/2003 | US20030168986 Multiple stage depressed collector (MSDC) klystron based amplifier for ground based satellite and terrestrial communications |
| 09/11/2003 | US20030168985 High power density multistage depressed collector |
| 09/09/2003 | US6617791 Inductive output tube with multi-staged depressed collector having improved efficiency |
| 08/26/2003 | US6611103 Electron gun assembly for cathode ray tube |
| 08/14/2003 | US20030151367 Cold cathode and method for operating the same |
| 08/14/2003 | US20030151366 Traveling wave tube |
| 08/14/2003 | US20030150722 Magnetrons |
| 08/13/2003 | CN1435859A Magnetron and method for mfg. same |
| 08/07/2003 | US20030146703 Inner conductor for a co-axial gyrotron with axial corrugations which are evenly distributed around the periphery |
| 08/06/2003 | CN1434976A Magnetron anodes |
| 07/23/2003 | EP1328958A1 Magnet, vacuum electron devices and communication systems |
| 07/23/2003 | CN1432186A Magnetrons |
| 07/17/2003 | US20030132887 Transducer with field emitter array |
| 07/15/2003 | US6593695 Broadband, inverted slot mode, coupled cavity circuit |
| 07/10/2003 | US20030127987 Magnetron anodes |
| 07/03/2003 | WO2003054904A1 Method and apparatus for detecting individual twt helix current for multiple twt loads |
| 07/03/2003 | US20030121911 Magnetron arrangement |
| 07/01/2003 | US6586883 Method and apparatus for detecting individual TWT helix current for multiple TWT loads |
| 06/24/2003 | US6583567 Electron tube device mounted with a cold cathode and a method of impressing voltages on electrodes of the electron tube device |
| 06/05/2003 | WO2003046941A1 Phased array source of electromagnetic radiation |
| 06/04/2003 | EP1316984A2 Magnetron apparatus |
| 05/21/2003 | EP1312101A1 Broadband, inverted slot mode, coupled cavity circuit |
| 05/15/2003 | US20030090220 Magnetron apparatus |
| 05/14/2003 | EP1309982A1 Inner conductor for a coaxial gyrotron with axial corrugations which are evenly distributed around the periphery |
| 05/14/2003 | CN1417834A Magnetron unit |
| 05/08/2003 | WO2003038854A1 Electron beam tube apparatus |
| 05/08/2003 | US20030085666 Electron beam tubes |
| 05/02/2003 | EP1305811A1 Broadband power micro-wave tube |
| 05/01/2003 | US20030080688 Microdischarge devices and arrays |
| 04/24/2003 | US20030076043 Cathode ray tube with efficiently driven electron gun |
| 04/22/2003 | US6552490 Multiple stage depressed collector (MSDC) klystron based amplifier for ground based satellite and terrestrial communications |
| 04/17/2003 | US20030070922 Magnetron |
| 04/16/2003 | CN1411019A 磁控管 Magnetron |
| 04/10/2003 | WO2003030204A2 Microwave generator with virtual cathode |
| 03/25/2003 | US6538386 Forming photoresist layer around outer surface of cylindrical core, patterning and etching to form vanes extending radially from outer surface to define plurality of slots, plating core and vanes, removing to form cylindrical anode with slots |
| 03/19/2003 | CN1404093A 磁控管 Magnetron |
| 03/19/2003 | CN1404092A 磁控管 Magnetron |
| 03/12/2003 | CN1103025C Microwave oven equipped with structurally simple apparatus for generating microwave frequency energy |
| 03/05/2003 | CN1102829C Energy switch for axis-coupled standing wave accelerator tube |
| 02/26/2003 | EP1286379A2 Magnetron |
| 02/25/2003 | US6525477 Optical magnetron generator |
| 02/20/2003 | WO2003015264A1 Device for amplifying a high frequency signal |
| 02/13/2003 | US20030030390 Broadband, inverted slot mode, coupled cavity circuit |
| 01/23/2003 | US20030016421 Wireless communication system with high efficiency/high power optical source |
| 01/21/2003 | CA2099813C X-z geometry periodic permanent magnet focusing system |
| 01/15/2003 | EP1068627B1 Inductive output amplifier output cavity structure |
| 01/15/2003 | CN1391250A Electron gun for cathode ray tube |
| 01/08/2003 | EP1273023A1 Magnetrons |
| 01/07/2003 | US6504304 Magnetron |
| 01/07/2003 | US6504303 Optical magnetron for high efficiency production of optical radiation, and 1/2λ induced pi-mode operation |
| 12/31/2002 | US6501224 Magnetron having magnetic pole pieces providing a specific magnetic flux to thickness ratio |
| 12/26/2002 | US20020195944 Electron gun assembly for cathode ray tube |
| 12/19/2002 | US20020190656 Optical magnetron generator |
| 12/19/2002 | US20020190655 Vacuum electron device with a photonic bandgap structure and method of use thereof |
| 12/17/2002 | US6495961 TWT power supply with improved dynamic range |
| 12/05/2002 | US20020180362 Inductive output tube with multi-staged depressed collector having improved efficiency |
| 12/04/2002 | CN1383572A Optical magnetron for effectively generating light emission and 1/2 lambda initiated magnetron oscillating mode work |