Patents for H01J 21 - Vacuum tubes (739)
07/1993
07/13/1993US5227699 Recessed gate field emission
07/06/1993US5225735 Electron tube with cylindrical hexagonal grid aligned with rhombus shaped cathode wires
06/1993
06/09/1993EP0544663A1 Process and structure of an integrated vacuum microelectronic device.
06/08/1993US5217401 Method of manufacturing a field-emission type switching device
06/02/1993EP0544516A1 Apparatus for field emission device electrostatic electron beam focussing
05/1993
05/25/1993US5214346 Microelectronic vacuum field emission device
05/19/1993CN1072286A Electron device employing low/negative electron affinity electron source
05/19/1993CN1020828C Encapsulated field emission device
04/1993
04/27/1993US5206565 High-power low-voltage tetrode having a full walled matrix cathode and a control grid spacing of less than 1 mm
04/20/1993US5204588 Quantum phase interference transistor
04/20/1993US5203731 Process and structure of an integrated vacuum microelectronic device
04/07/1993EP0535953A2 Field-emission type electronic device
03/1993
03/10/1993EP0530981A1 Switching circuits employing field emission devices
03/10/1993CN1069828A 多极场致电子发射器件及其制造方法 Multiple electrode field electron emission device and manufacturing method thereof
03/09/1993US5192240 Method of manufacturing a microelectronic vacuum device
03/04/1993WO1993004496A1 Recessed gate field emission device
03/02/1993US5191217 Method and apparatus for field emission device electrostatic electron beam focussing
02/1993
02/03/1993EP0525764A2 Method of forming a vacuum micro-chamber for encapsulating a microelectronics device
02/03/1993EP0525763A1 A method for building a vacuum microelectronics device
01/1993
01/26/1993US5181874 Method of making microelectronic field emission device with air bridge anode
01/20/1993EP0523980A1 A field emission device and method for forming
01/20/1993EP0523494A1 An electron device employing a low/negative electron affinity electron source
01/19/1993CA2070767A1 Electron device employing a low/negative electron affinity electron source
12/1992
12/29/1992US5175468 Device for generating an on-off modulation electron beam
12/22/1992US5173697 Digital-to-analog signal conversion device employing scaled field emission devices
12/22/1992US5173635 Bi-directional field emission device
12/22/1992US5173634 Current regulated field-emission device
11/1992
11/26/1992DE4112436A1 Field emission diode for protecting electronic circuits from overvoltages - with single crystal silicon@ anode substrate and field emission cathode bridge
11/25/1992EP0514474A1 Cold cathode field emission device with integral emitter ballasting
11/24/1992US5166575 Grid tube with coupled-cavity output, with coupling element integral with said tube
11/19/1992EP0513777A2 Multiple electrode field electron emission device and process for manufacturing it
10/1992
10/20/1992US5156988 Operable at room temperature
10/13/1992US5155420 Switching circuits employing field emission devices
09/1992
09/22/1992US5150019 Integrated circuit electronic grid device and method
09/15/1992US5148079 Planar type cold cathode with sharp tip ends and manufacturing method therefor
09/15/1992US5148078 Field emission device employing a concentric post
09/08/1992US5145438 Method of manufacturing a planar microelectronic device
08/1992
08/25/1992US5142184 Cold cathode field emission device with integral emitter ballasting
08/23/1992WO1992015111A1 Electron amplifier and method of manufacture therefor
08/23/1992CA2104679A1 Electron amplifier and method of manufacture therefor
08/12/1992EP0498254A1 Microelectronic ballistic transistor and process of manufacturing the same
08/04/1992US5136205 Microelectronic field emission device with air bridge anode
07/1992
07/29/1992EP0496576A2 Field emission device with vertically integrated active control
07/29/1992EP0496008A1 Controllable high-power electron tube
07/22/1992EP0495436A2 Quantum phase interference transistor
07/22/1992EP0495227A1 Method of forming planar vacuum microelectronic devices with self aligned anode
07/15/1992CN1062813A Design and compound method of multivariant power emission electron tube
07/07/1992US5127990 Vacuum microtubes
06/1992
06/17/1992EP0490536A1 Vacuum microelectronic field-emission device
06/09/1992US5121087 Electronic resonator employing an FED resonator element
06/03/1992EP0488972A2 Device for generating an on-off modulated electron beam
05/1992
05/29/1992CA2030972A1 Photon generator for micro-wave signals
05/12/1992US5112436 Method of forming planar vacuum microelectronic devices with self aligned anode
03/1992
03/24/1992US5099332 Grid tube with increased efficiency
02/1992
02/19/1992CA2090391A1 Electon beam device
01/1992
01/29/1992CN1058294A Process and structure of integrated vacuum microelectronic device
01/28/1992US5083958 Field emitter structure and fabrication process providing passageways for venting of outgassed materials from active electronic area
01/22/1992EP0467572A2 Field emitter structure and fabrication process providing passageways for venting of outgassed materials from active electronic area
01/19/1992WO1992002030A1 Process and structure of an integrated vacuum microelectronic device
01/07/1992US5079476 Encapsulated field emission device
12/1991
12/24/1991US5075595 Field emission device with vertically integrated active control
12/11/1991EP0460173A1 Field emitter structure and fabrication process
11/1991
11/20/1991CN1056377A Cold cathode field emission device with integral emitter ballasting
11/20/1991CN1056375A Encapsulated field emission device
11/13/1991EP0456550A1 Electron tube with cylindrical grid
11/05/1991US5063323 Field emitter structure providing passageways for venting of outgassed materials from active electronic area
10/1991
10/23/1991EP0452425A1 Switched anode field emission device
10/10/1991DE4010909A1 Cold-emission protection diode - has air-isolated electrodes with micrometric separation to prevent electrical discharge
09/1991
09/10/1991US5048068 Magnetically operated pulser
09/04/1991EP0444670A2 Planar type cold cathode with sharp tip ends and manufacturing method therefor
08/1991
08/28/1991EP0443865A1 Field emission device and method of manufacture therefor
08/22/1991WO1991012625A1 Encapsulated field emission device
08/22/1991WO1991012624A1 Cold cathode field emission device with integral emitter ballasting
08/06/1991US5038082 Vacuum switch apparatus
08/06/1991US5038070 Field emitter structure and fabrication process
07/1991
07/11/1991WO1991010252A1 Field emitter structure and fabrication process
06/1991
06/12/1991EP0432045A1 Grid tube with better efficiency
05/1991
05/22/1991CN2077590U High-voltage d.c inverse transform tube
05/07/1991CA1283946C Very high speed integrated microelectronic tubes
04/1991
04/30/1991US5012482 Gas laser and pumping method therefor using a field emitter array
04/30/1991US5012153 Split collector vacuum field effect transistor
04/24/1991CN1050946A Electron tube
04/17/1991EP0422451A1 Electron tube
03/1991
03/26/1991US5003216 Electron amplifier and method of manufacture therefor
02/1991
02/21/1991WO1991002371A1 Switched anode field emission device
02/19/1991US4994708 Cold cathode device
02/12/1991US4993033 High power fast switch
02/05/1991CA1279890C High-power switch tube with faraday cage cavity anode
01/1991
01/22/1991US4986787 Method of making an integrated component of the cold cathode type
01/09/1991EP0407252A1 Grid tube with a coupled-cavity output and the coupling element integrated within the tube
01/09/1991EP0406886A2 Field-emission type switching device and method of manufacturing it
01/08/1991US4983878 Field induced emission devices and method of forming same
09/1990
09/12/1990EP0386710A1 Vacuum switch apparatus
09/11/1990US4956574 Switched anode field emission device
05/1990
05/08/1990CA1268806A1 Electron tube with mesh or cage cathode
04/1990
04/04/1990EP0362017A1 Device such as diode, triode or flat and integrated cathodoluminescent display device, and manufacturing process
03/1990
03/08/1990DE3924745A1 Field emission diode serving as heavy current switch - has cathode emitting surfaces formed by edges of thin conducting layers on insulating support
01/1990
01/10/1990EP0350378A1 Electronic micro component self-sealed under vacuum, especially a diode or triode, and its manufacturing process
10/1989
10/31/1989US4877996 Electron tube with control electrode remote from anode
08/1989
08/08/1989US4855636 Micromachined cold cathode vacuum tube device and method of making
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