| Patents for H01J 23 - Details of transit-time tubes of the types covered by group (3,921) |
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| 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 |
| 01/06/1981 | US4243961 Apparatus for selecting the resonance frequency of a microwave device comprising a plurality of cavities |
| 01/06/1981 | US4243915 Delay line comprising coupled cavities and cooled by fluid-circulation |
| 01/06/1981 | US4243914 Circulating fluid cooled delay line for high frequency tubes, and high frequency tubes having such a delay line |
| 12/10/1980 | EP0020262A1 Isolated-collector assembly for power tubes and tube comprising such a collector |
| 12/10/1980 | EP0020253A1 Insulated collector for an electronic power tube |
| 12/10/1980 | EP0020218A1 Radiation-cooled multistage depressed collector for a microwave tube and microwave tube comprising such a collector |
| 12/10/1980 | EP0020209A1 Travelling-wave tube provided with a microwave delay line structure comprising a conductor with variable cross-section |
| 12/02/1980 | US4237402 Slow-wave circuit for traveling-wave tubes |
| 11/18/1980 | US4234855 System for linearly tuning a microwave oscillator |
| 11/12/1980 | EP0018724A1 Spin-tuned magnetron |
| 11/11/1980 | US4233540 Magnetron for microwave oven |
| 11/11/1980 | US4233539 Aluminum carbide or boride or boron carbide coating on copper electrode |
| 11/04/1980 | CA1088992A1 Traveling wave deflector for electron beams |
| 10/28/1980 | US4230968 Cathode structure for magnetrons |
| 10/28/1980 | CA1088670A1 Microwave tube assembly |
| 10/21/1980 | US4229676 Helical slow-wave structure assemblies and fabrication methods |
| 10/07/1980 | US4227116 Zero-bias gridded gun |
| 09/30/1980 | US4225806 Generator of meter- or decimeter-long waves |
| 09/17/1980 | EP0015449A1 Gas tight microwave window in a coaxial line, especially for travelling-wave tubes |
| 09/17/1980 | EP0015448A1 Vacuum tight microwave window in a coaxial line, especially for travelling-wave tubes |
| 09/16/1980 | US4223246 Microwave tubes incorporating rare earth magnets |
| 09/16/1980 | US4223245 Magnetron device exhibiting reduced microwave leakage |
| 09/16/1980 | US4223243 Tube with bonded cathode and electrode structure and getter |
| 09/16/1980 | CA1085907A1 Thermionic electron source with bonded control grid |
| 08/26/1980 | US4219758 Traveling wave tube with non-reciprocal attenuating adjunct |
| 08/07/1980 | WO1980001622A1 Amplifying klystron |
| 08/06/1980 | EP0014128A1 A device to make an electrical and thermal contact between several metallic surfaces, and utilisation thereof |
| 08/05/1980 | US4216409 Multi-cavity klystron device |
| 07/22/1980 | CA1082202A1 Cyano acetic acid anilide derivatives, process for their manufacture and compositions containing these compounds |
| 07/15/1980 | US4212423 Magnetron anode manufacture |
| 07/09/1980 | EP0013212A1 Manufacturing method for a microwave delay line |
| 07/09/1980 | EP0013205A1 Microwave delay line and travelling-wave tube utilizing same |
| 07/09/1980 | EP0013201A1 Directly heated cathode and high frequency electron tube comprising such a cathode |
| 07/08/1980 | US4211954 Alternating phase focused linacs |
| 07/01/1980 | CA1080790A1 Method of making a high current density long life cathode |
| 06/17/1980 | US4208706 Switching regulator |
| 06/11/1980 | EP0012034A1 Variable frequency magnetron |
| 06/10/1980 | US4207496 Microwave output section of an internal magnet type magnetron |
| 06/10/1980 | US4207495 Means for improving the collector efficiency of an emitting sole crossed field amplifier |
| 06/10/1980 | US4207494 Microwave tubes provided with permanent magnet type magnetic circuits |
| 06/10/1980 | US4207492 Slow-wave high frequency deflection structure |
| 06/03/1980 | CA1078962A1 Magnetron slot mode absorber |
| 05/27/1980 | US4205257 Magnetron strap ring structure |
| 05/27/1980 | US4205256 Magnetron supporting structure |
| 05/27/1980 | US4205250 Electronic tubes |
| 05/20/1980 | US4204138 Permanent magnet-containing magnetron |
| 04/29/1980 | US4200217 Method of manufacturing an article having a press-worked member inwardly of a cylindrical member |
| 04/22/1980 | US4199709 Injection of an electron beam |
| 04/16/1980 | EP0009903A1 Spin tuned magnetron |
| 04/16/1980 | EP0009574A1 Travelling-wave tube comprising a helical slow-wave circuit and method of manufacturing same |
| 03/18/1980 | US4194142 Mode control apparatus for a separable-insert coaxial magnetron |
| 03/04/1980 | CA1073110A1 Co-axial magnetrons |
| 02/21/1980 | WO1980000282A1 Zero-bias gridded gun |
| 02/19/1980 | US4189660 Electron beam collector for a microwave power tube |
| 02/05/1980 | US4187444 Open-circuit magnet structure for cross-field tubes and the like |
| 01/22/1980 | US4185225 Traveling wave tube |
| 01/10/1980 | WO1980000049A1 Travelling wave tube arrangements |
| 12/18/1979 | US4179639 Anode assembly for electron discharge devices |
| 12/11/1979 | US4178533 Microwave delay line for travelling wave tube |
| 12/11/1979 | CA1068003A1 Tunable magnetron |
| 12/11/1979 | CA1068002A1 Resonant cavity magnetron with choke structure for reducing harmonics in output system |
| 12/04/1979 | US4177402 Magnetron pole piece assembly |
| 11/20/1979 | US4175245 Magnetron magnet assembly |
| 11/06/1979 | US4173744 Impedance matched coupling device for microwave tubes |
| 10/30/1979 | CA1065487A1 Magnetron filter |
| 10/03/1979 | EP0004492A2 Microwave tube containing a delay line cooled by a circulating fluid |
| 10/02/1979 | US4169987 Magnetron tubes cathode support |
| 10/02/1979 | CA1063728A1 Dual mode gridded gun |
| 09/25/1979 | CA1063244A1 Resonant cavity magnetron having a helical cathode |
| 08/28/1979 | US4166235 Magnetron comprising ferromagnetic material members axially magnetized in opposite directions |
| 08/28/1979 | US4165949 High efficiency split flow turbine for compressible fluids |
| 08/21/1979 | US4165473 Electron tube with dispenser cathode |
| 08/14/1979 | US4164685 Magnetron device |
| 08/14/1979 | US4164684 Magnetrons |
| 08/07/1979 | US4163922 Magnetrons |
| 07/31/1979 | US4163175 Magnetron for which leakage of H.F. noise is minimized |
| 06/19/1979 | US4158791 Helix traveling wave tubes with resonant loss |
| 06/14/1979 | WO1979000329A1 Magnetron |
| 06/12/1979 | US4158154 Delay line for transit time amplifier tubes |
| 05/29/1979 | US4156829 Apparatus for suppressing radiation leakage in a magnetron circuit |
| 05/22/1979 | US4156163 Coupled cavity structure |
| 05/08/1979 | US4153859 Travelling wave tube with a helical delay line |
| 05/01/1979 | CA1053799A1 Magnetron employing a permanent magnet of a manganese-aluminium-carbon system alloy |
| 05/01/1979 | CA1053798A1 Multiperiodic linear accelerating structures |
| 04/03/1979 | US4147955 Travelling wave tubes |
| 04/03/1979 | US4147953 Cathode construction for linear beam tubes |
| 04/03/1979 | US4146949 Method for making a magnetron anode |
| 03/20/1979 | US4145635 Electron emitter with focussing arrangement |
| 03/13/1979 | CA1050659A1 Magnetron with radially magnetized magnets and built-in pole shoes |
| 03/06/1979 | US4143341 Delay line for traveling wave tubes, in particular to the amplification of mm waves |
| 03/06/1979 | US4143300 Spin tuned magnetrons |
| 03/06/1979 | US4143295 Cathode structure for an electron tube |
| 02/07/1979 | EP0000672A1 Meter or decimeter waves generator formed by a resonant structure coupled to a hollow electron beam. |
| 02/06/1979 | US4138625 Helix type travelling-wave tube amplifier |
| 01/30/1979 | US4137482 Periodic permanent magnet focused TWT |
| 01/30/1979 | US4136733 Heating device |
| 01/10/1979 | EP0000309A1 Hollow-beam generator producing monokinetic electrons along helicoidal paths |
| 01/02/1979 | US4132921 Megnetrons getter |
| 12/26/1978 | US4131825 Ditherable and tunable magnetron comprising axially tuning and rotational tuning members |