| Patents for H01J 25 - Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons (1,999) |
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| 10/15/1992 | WO1992014256A3 Small-size coaxial magnetron |
| 09/22/1992 | US5150067 Electromagnetic pulse generator using an electron beam produced with an electron multiplier |
| 09/22/1992 | US5149929 Microwave oven with inverter controlled power source |
| 09/01/1992 | US5144194 Quasi-optical gyrotron having angularly spaced quasi-optical resonators lying in a common plane |
| 08/26/1992 | EP0500241A1 Velocity modulation microwave amplifier with multiple band interaction structures |
| 08/25/1992 | US5142250 High power microwave generator |
| 08/20/1992 | WO1992014256A2 Small-size coaxial magnetron |
| 08/19/1992 | EP0499514A1 Mode converter and power-dividing device for a microwave tube, and microwave tube with such a device |
| 08/11/1992 | US5138230 Quasi-optical gyrotron having a rotatable mount for providing resonator mirrors of a selected frequency |
| 08/06/1992 | WO1992013357A1 Gyrotron with radial beam extraction |
| 07/28/1992 | US5134343 Quasi-optical gyrotron having an electron gun with alternating high and low density electron emitting segments |
| 07/28/1992 | US5134342 Quasi-optical gyrotron having a hologram output coupling |
| 07/28/1992 | US5134341 Quasi-optical gyrotron having a yoke structure shielding the superconductive resonator from unwanted magnetic fields |
| 07/21/1992 | US5132638 High power klystron amplifier |
| 07/21/1992 | CA1305534C High-frequency heating device |
| 07/15/1992 | EP0494342A1 Sputtering cathode |
| 06/23/1992 | US5124664 Field emission devices |
| 06/17/1992 | EP0490741A1 Microwave tube with a cavity having a dielectric structure, and method of making a tube cavity |
| 06/03/1992 | EP0488852A1 Cathode for ultra high frequency tubes |
| 06/03/1992 | EP0187852B1 Microwave electron gun |
| 05/27/1992 | EP0486677A1 Method and device for generating microwaves using a split cavity modulator |
| 05/20/1992 | EP0471795A4 Energy conversion using charge particles |
| 05/12/1992 | US5113154 Microwave generator device with virtual cathode |
| 03/31/1992 | US5101168 High efficiency high power microwave source |
| 03/18/1992 | EP0475802A1 Klystron with broad instantaneous band |
| 02/26/1992 | EP0471795A1 Energy conversion using charge particles |
| 02/25/1992 | CA2049714A1 Widened instantaneous passband klystron |
| 02/19/1992 | CA2090391A1 Electon beam device |
| 02/12/1992 | EP0470731A2 Traveling wave tube with gain flattening slow wave structure |
| 02/11/1992 | CA1295673C High voltage power supply particularly adapted for a twt |
| 01/15/1992 | EP0465845A2 Microwave window |
| 12/26/1991 | WO1991020090A1 Method and device for generating microwaves using a split cavity modulator |
| 10/22/1991 | US5059928 Mode transformer for microwave energy transmission circuit |
| 10/02/1991 | EP0449275A2 Microwave oven with invertor control power source |
| 10/02/1991 | EP0449174A2 Gyrotron having a mode converter |
| 09/24/1991 | US5052003 Quasi-optical gyrotron |
| 09/17/1991 | US5049782 Magnetron with harmonic suppression means |
| 09/03/1991 | US5045749 Electron beam generator and electronic devices using such a generator |
| 08/29/1991 | DE4100775A1 Electron gun for gyrotron - ensures homogeneous distribution in electron beam by bounding emission region(s) at sides by non-emitting edge region(s) |
| 08/27/1991 | US5043630 Electron gun with electron beam modulated by an optical device |
| 08/14/1991 | EP0441569A2 Magnetrons |
| 08/07/1991 | EP0440530A1 Multiple-beam microwave tube with coaxial outlet |
| 08/07/1991 | EP0440529A1 Multiple-beam microwave tube with groups of adjacent cavities |
| 08/06/1991 | US5038077 Gyroklystron device having multi-slot bunching cavities |
| 07/31/1991 | EP0438738A1 Quasi optical component for microwave radiation |
| 07/30/1991 | CA1287129C High gain miniature cross-field amplifier |
| 06/11/1991 | US5023514 Longitudinal axis |
| 06/05/1991 | EP0430461A2 Field emission devices |
| 05/21/1991 | US5018180 Energy conversion using high charge density |
| 05/15/1991 | EP0426855A1 Converter of higher-order wave of a round waveguide into a mirror-type transmission line wave |
| 05/14/1991 | US5015914 Couplers for extracting RF power from a gyrotron cavity directly into fundamental mode waveguide |
| 05/07/1991 | US5014028 Triangular section permanent magnetic structure |
| 03/27/1991 | EP0144317B2 Grid structure for certain plural mode electron guns |
| 03/26/1991 | US5003225 Method and apparatus for producing intense microwave pulses |
| 02/20/1991 | EP0413018A1 Hyperfrequency wave generator device with virtual cathode. |
| 02/12/1991 | US4993033 High power fast switch |
| 02/06/1991 | EP0411890A1 Gyrotron |
| 02/06/1991 | CN1049069A Quasi-optical gyrotron |
| 01/30/1991 | EP0410217A1 Quasi-optical gyrotron |
| 01/30/1991 | CN1048948A Quasi-optical gyrotron |
| 01/30/1991 | CN1011451B High efficient micro wave tube |
| 01/29/1991 | US4988956 High frequency oscillator |
| 01/16/1991 | EP0407558A1 Amplifier or oscillator device operating at ultrahigh frequency. |
| 12/27/1990 | EP0403811A1 Quasi-optical gyrotron |
| 12/19/1990 | EP0402631A1 Quasi-optical gyrotron |
| 12/19/1990 | CN1047937A Concentricity adjusting technology for cathode and anode of magnetron |
| 12/18/1990 | US4978889 Plasma wave tube and method |
| 11/27/1990 | US4973924 Mode converter for microwave power transmission circuit |
| 11/06/1990 | US4968945 Open tube resonator test setup for conductivity measurements |
| 11/04/1990 | WO1990013905A1 Energy conversion using charge particles |
| 11/04/1990 | CA2054724A1 Energy conversion using charge particles |
| 10/30/1990 | US4967162 Stripline traveling wave device and method |
| 10/24/1990 | EP0393485A1 Quasi-optical gyrotron |
| 10/11/1990 | DE3910822A1 Electron beam tube |
| 10/03/1990 | EP0390474A2 Klystron amplifier |
| 10/03/1990 | EP0389562A1 Mode transformer for hyper-frequency power transmission circuit |
| 09/30/1990 | CA2013366A1 Klystron with reduced length |
| 09/12/1990 | EP0387145A1 Electron beam generator and electronic devices using such a generator |
| 08/29/1990 | EP0384813A1 Electron gun with a beam modulated by an optical device |
| 08/18/1990 | WO1990009674A1 Hyperfrequency wave generator device with virtual cathode |
| 08/14/1990 | US4949011 Klystron with reduced length |
| 07/28/1990 | WO1990009029A1 Amplifier or oscillator device operating at ultrahigh frequency |
| 07/12/1990 | WO1990007800A1 Converter of higher-order wave of a round waveguide into a mirror-type transmission line wave |
| 06/13/1990 | EP0372975A2 Couplers for extracting RF power from a gyrotron cavity directly into fundamental mode waveguide |
| 06/12/1990 | US4933594 Electron collector for electron tubes |
| 06/12/1990 | CA1270329A1 Wide-band extended interaction device |
| 06/05/1990 | US4931695 High performance extended interaction output circuit |
| 05/22/1990 | US4928070 Low-noise crossed-field amplifier |
| 05/15/1990 | US4926094 High-performance gyrotron for production of electromagnetic millimeter or submillimeter waves |
| 05/15/1990 | US4926093 Gyrotron device |
| 05/09/1990 | EP0367155A2 Extremely high frequency oscillator |
| 04/17/1990 | US4918049 Critical temperature; supercooling |
| 04/10/1990 | US4916361 Plasma wave tube |
| 03/27/1990 | US4912367 Plasma-assisted high-power microwave generator |
| 03/27/1990 | US4912366 Coaxial traveling wave tube amplifier |
| 01/31/1990 | EP0352961A1 Klystrode frequency multiplier |
| 01/30/1990 | US4897609 Axially coupled gyrotron and gyro TWTA |
| 01/09/1990 | CA1264375A1 Free electron diode oscillator |
| 01/03/1990 | CN1038545A Efficient microwave tube |
| 12/14/1989 | WO1989012311A1 High performance extended interaction output circuit |