| Patents for H01J 25 - Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons (1,999) |
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| 10/26/1982 | US4356430 Gyrotron cavity resonator with an improved value of Q |
| 10/13/1982 | EP0062599A2 Slow wave structure for a backward wave oscillator tube |
| 10/12/1982 | CA1133597A1 Backward wave oscillator tube for the production of microwaves |
| 09/14/1982 | US4349424 Ion sputter textured graphite |
| 08/18/1982 | EP0058039A2 Gyrotron device |
| 08/17/1982 | US4345220 High power microwave generator using relativistic electron beam in waveguide drift tube |
| 05/25/1982 | US4331934 Cerenkov submillimeter electromagnetic wave oscillator |
| 04/20/1982 | CA1122322A1 Electron beam collector for a microwave power tube |
| 04/13/1982 | US4324967 Microwave heating apparatus having magnetic coupling for driving the antenna |
| 04/07/1982 | EP0049198A1 Electrons accelerator, and millimeter and infra-millimeter waves generator including the same |
| 03/31/1982 | EP0048648A1 Coupled cavities delay line for a travelling-wave tube, and travelling-wave tube comprising such a line |
| 01/26/1982 | US4313072 Light modulated switches and radio frequency emitters |
| 12/15/1981 | US4306174 Radio wave generator for ultra-high frequencies |
| 12/02/1981 | EP0040998A1 Extended interaction oscillator |
| 11/10/1981 | US4300105 Two-cavity klystron oscillator |
| 11/03/1981 | US4298824 Millimeter and sub-millimeter radiation source |
| 10/20/1981 | US4296354 Traveling wave tube with frequency variable sever length |
| 10/06/1981 | US4293828 Arrangement for suppressing interference waves and harmonic waves in traveling wave tubes with a short circuiting slide in the output wave guide |
| 09/29/1981 | US4292567 In-band resonant loss in TWT's |
| 09/08/1981 | US4288721 Microwave magnetron-type device |
| 08/25/1981 | US4286230 Near millimeter wave generator with dielectric cavity |
| 08/18/1981 | US4284922 Linear beam microwave amplifier having section comprising three resonant coupled circuits two of which are resonant cavities which interact with the beam |
| 08/04/1981 | CA1106456A1 High gain crossed field amplifier |
| 06/17/1981 | EP0030328A1 Multicavity klystron |
| 06/16/1981 | US4274032 High power liquid cooled double strapped vane type magetron |
| 04/21/1981 | US4263566 Backward wave oscillator tube utilizing successive delay line sections for increased power |
| 04/14/1981 | CA1099348A1 Method and apparatus for reducing noise in crossed- field amplifiers |
| 03/03/1981 | CA1096970A1 Radio-frequency electron accelerator |
| 01/20/1981 | US4246512 Co-axial multi cavity anode magnetrons |
| 01/07/1981 | EP0022016A1 Slow-wave structure with varying pitch for a travelling-wave tube, and travelling-wave tube using such a slow-wave structure |
| 12/10/1980 | EP0020209A1 Travelling-wave tube provided with a microwave delay line structure comprising a conductor with variable cross-section |
| 11/27/1980 | WO1980002621A1 Electrovacuum shf device |
| 11/04/1980 | US4232249 Beam-switched traveling wave tube |
| 10/21/1980 | US4229677 High-power hyperfrequency emission tube |
| 10/01/1980 | EP0016345A1 Device for suppressing interfering and harmonic waves in travellingwave tubes with a choke piston in the output waveguide |
| 09/30/1980 | US4225806 Generator of meter- or decimeter-long waves |
| 09/30/1980 | CA1086862A1 Lossless traveling wave booster tube |
| 09/23/1980 | US4224576 Gyrotron travelling-wave amplifier |
| 08/26/1980 | US4219758 Traveling wave tube with non-reciprocal attenuating adjunct |
| 08/07/1980 | WO1980001622A1 Amplifying klystron |
| 07/29/1980 | US4215291 Collective particle accelerator |
| 07/22/1980 | CA1082202A1 Cyano acetic acid anilide derivatives, process for their manufacture and compositions containing these compounds |
| 07/09/1980 | EP0013242A1 Generator for very high frequency electromagnetic waves |
| 07/01/1980 | US4210845 Trirotron: triode rotating beam radio frequency amplifier |
| 06/26/1980 | WO1980001332A1 Method and device for correction of phase shift in amplifying multi-cavity klystron |
| 06/24/1980 | US4209755 Tunable oscillator comprising dual-cavity klystron |
| 06/10/1980 | US4207495 Means for improving the collector efficiency of an emitting sole crossed field amplifier |
| 05/20/1980 | US4204138 Permanent magnet-containing magnetron |
| 04/29/1980 | US4200821 Relativistic electron beam crossed-field device |
| 04/29/1980 | US4200820 High power electron beam gyro device |
| 04/08/1980 | US4197483 Submillimeter wave generation using surface acoustic waves in piezoelectric materials |
| 03/19/1980 | EP0008896A1 An output section for a microwave amplifier, a microwave amplifier and a circuit for use in a microwave amplifier |
| 03/04/1980 | CA1073110A1 Co-axial magnetrons |
| 02/19/1980 | US4189660 Electron beam collector for a microwave power tube |
| 02/19/1980 | US4189441 A ruthenium carbonyl catalyst and an inorganic or tetraalkylammonium iodide or bromide promoter |
| 09/25/1979 | CA1063245A2 Resonant cavity magnetron having a helical cathode |
| 09/18/1979 | US4168451 Multi-cavity klystron amplifiers |
| 08/28/1979 | US4165949 High efficiency split flow turbine for compressible fluids |
| 05/01/1979 | CA1053799A1 Magnetron employing a permanent magnet of a manganese-aluminium-carbon system alloy |
| 04/17/1979 | US4150340 High-power microwaves from a non-isochronous reflecting electron system (NIRES) |
| 04/10/1979 | US4149107 Backward wave oscillator tube for the production of microwave |
| 04/03/1979 | US4147956 Wide-band coupled-cavity type traveling-wave tube |
| 02/07/1979 | EP0000672A1 Meter or decimeter waves generator formed by a resonant structure coupled to a hollow electron beam. |
| 10/24/1978 | US4122372 Dielectrically loaded waveguide for producing high power coherent microwave radiation |
| 10/03/1978 | CA1039797A1 Electron beam electrical power transmission system |
| 08/29/1978 | CA1037216A2 Cuspated sheets |
| 08/15/1978 | US4107572 Traveling-wave tube having phase velocity tapering means in a slow-wave circuit |
| 08/08/1978 | US4105951 Multipactor discharge arrangements |
| 08/08/1978 | US4105913 Core magnetron and method of manufacturing permanent magnets therefor with low gas emission |
| 07/11/1978 | US4100458 Multipactor discharge tuned co-axial magnetrons |
| 07/11/1978 | US4100457 Velocity modulation tubes employing harmonic bunching |
| 07/04/1978 | US4099094 Electronic tube of magnetron type operating as a oscillator or an amplifier |
| 07/04/1978 | US4099093 Electronic tube for generating millimetric wave pulses |
| 05/02/1978 | US4087718 High gain crossed field amplifier |
| 04/04/1978 | US4082979 Method and apparatus for reducing noise in crossed-field amplifiers |
| 02/14/1978 | US4074169 Magnetron with harmonic frequency output suppression |
| 12/06/1977 | US4061767 Cyano acetic acid anilide derivatives, process for their manufacture and compositions containing these compounds |
| 10/11/1977 | US4053810 Lossless traveling wave booster tube |
| 07/26/1977 | US4038602 Automodulated realtivistic electron beam microwave source |
| 07/12/1977 | US4035688 Electronic tunable microwave device |
| 06/07/1977 | US4028583 High power-double strapped vane type magnetron |
| 05/31/1977 | US4027193 Klystron-resonant cavity accelerator system |
| 05/24/1977 | US4025599 Thermoplastic |
| 04/19/1977 | US4019089 Wideband multi-cavity velocity modulation tube |
| 04/19/1977 | US4019088 Electrovacuum SHF apparatus |
| 11/02/1976 | US3989979 Magnetron employing a permanent magnet formed of a manganese-aluminum-carbon system alloy |
| 10/19/1976 | US3987333 Magnetron comprising a radially magnetized permanent magnet and an axially magnetized permanent magnet |
| 09/21/1976 | US3982152 Cascade crossed field device |
| 09/14/1976 | US3980920 Multi-resonator microwave oscillator |
| 08/10/1976 | US3974417 Four-cavity velocity modulation tube |
| 07/27/1976 | US3971966 Planar ring bar travelling wave tube |
| 06/29/1976 | US3967154 Magnetron having horizontally blown type radiator |
| 05/18/1976 | US3958148 Radio frequency noise generating magnetron |
| 05/04/1976 | US3955019 Cuspated sheet forming |
| 04/27/1976 | US3953759 Interdigital slow wave circuit for electron tubes |
| 03/16/1976 | US3944872 Radio frequency noise generating magnetron |
| 03/02/1976 | US3942066 Velocity modulation tube including a high resonance-frequency floating prebuncher having a q-value lower than a low resonance-frequency input cavity |
| 02/24/1976 | US3940656 High frequency tube apparatus |
| 02/10/1976 | US3938056 Method and apparatus for enhancing the output from a traveling wave tube |