| Patents for H01J 1 - Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps (21,638) |
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| 02/06/1990 | CA1265329A1 Method of manufacturing a scandate dispenser cathode and dispenser cathode manufactured by means of the method |
| 01/30/1990 | US4897574 Hot cathode in wire form |
| 01/23/1990 | US4896045 Electron beam head and patterning apparatus including detection of secondary or reflected electrons |
| 01/17/1990 | EP0351263A1 Electron source structure and its use in tubes emitting electromagnetic waves |
| 01/17/1990 | EP0351110A1 Method of manifacturing a cold cathode, field emission device and a field emission device manufactured by the method |
| 01/17/1990 | CN1006504B Heater for indirect-heated cathode |
| 01/16/1990 | US4894257 Vapor deposition, impregnation with barium, strontium aluminum oxide |
| 01/10/1990 | EP0350358A1 Electron gun and electron tube including such an electron gun |
| 01/10/1990 | EP0350357A1 Superconductor device for electron injection into an electronic tube |
| 01/09/1990 | US4893052 Cathode structure incorporating an impregnated substrate |
| 01/03/1990 | EP0348611A2 Fibre optic photocathode |
| 12/27/1989 | EP0347996A2 Photo-multiplier tube with electrodes fined to a support |
| 12/26/1989 | US4890035 Discharge electrode with microstructure surface |
| 12/26/1989 | US4890031 Semiconductor cathode with increased stability |
| 12/20/1989 | CN1038072A Crystal powder of hexagonal bipyramid scandium oxide and preparation method thereof |
| 12/12/1989 | US4886995 Heater for indirectly-heated cathode |
| 11/29/1989 | EP0343645A2 Electron-emitting device and electron-beam generator making use of it |
| 11/29/1989 | CN1037614A Coating method for making emission filament used for ionization in mass spectrum field |
| 11/28/1989 | US4884010 Electron-emitting device and its application particularly to making flat television screens |
| 11/09/1989 | DE3840416A1 Electron source for phase-coherent pairs of electrons |
| 11/08/1989 | EP0340258A1 Microwave integrated distributed amplifier with field emission triodes |
| 11/07/1989 | US4878866 Thermionic cathode structure |
| 11/02/1989 | WO1989010628A1 Encapsulated high brightness electron beam source and system therefor |
| 11/02/1989 | EP0339714A1 Electron tube device and electron tube |
| 11/02/1989 | EP0149684B1 Electrode structure for display device |
| 11/01/1989 | CN1036802A Processing method and installation used for production of tungsten-cerium electrode material |
| 10/31/1989 | CA1262578A1 Semiconductor device for generating an electron beam |
| 10/10/1989 | US4873052 Method of manufacturing a scandate dispenser cathode and scandate dispenser cathode manufactured according to the method |
| 10/05/1989 | WO1989009480A1 Expandable dispenser cathode |
| 10/05/1989 | WO1989009479A1 Process for manufacturing sources of field-emission type electrons, and application for producing emitter networks |
| 10/03/1989 | US4871911 Electron beam apparatus comprising a semiconductor electron emitter |
| 09/26/1989 | CA1260161A1 Axial flow plasma shutter |
| 09/20/1989 | EP0333369A1 Solid solution matrix cathode |
| 09/19/1989 | US4868380 Optical waveguide photocathode |
| 09/06/1989 | EP0331373A2 Semiconductor electron emitting device |
| 09/06/1989 | EP0331258A1 Electron beam apparatus |
| 09/06/1989 | CN2044098U 长寿多功率电器 Longevity much power appliances |
| 09/05/1989 | US4864187 Cathode for electron tube and manufacturing method thereof |
| 09/05/1989 | US4863581 Cathode with outer graphite layer and inner one of tantalum, tungsten or lanthanum hexaboride |
| 08/30/1989 | EP0330543A1 Directly heated cathode manufactured from thermally emissive material |
| 08/30/1989 | EP0330355A2 Cathode for electron tube |
| 08/23/1989 | EP0329432A2 Electron emitter |
| 08/16/1989 | CN1034823A Cathode of electron tube |
| 08/15/1989 | US4858062 Charging device |
| 08/09/1989 | EP0327074A2 Cathode for a cathode ray tube |
| 08/09/1989 | CN1004983B Manufacturing method of indirectly heated cathode |
| 08/08/1989 | US4855637 Oxidation resistant impregnated cathode |
| 08/02/1989 | EP0326273A2 Directly heated cathodes |
| 08/01/1989 | US4853754 Semiconductor device having cold cathode |
| 07/20/1989 | DE3803737A1 Elektronenbuendel sowie anordnung zum erzeugen derselben Elektronenbuendel and arrangement for producing the same |
| 07/19/1989 | CN1034090A Pressed multilayer cathod |
| 07/18/1989 | CA1257676A1 Device for producing coherent radiation |
| 07/04/1989 | US4845365 Process and apparatus for producing electrons using a field coupling and the photoelectric effect |
| 07/04/1989 | US4844942 Method of producing dark heater |
| 06/28/1989 | EP0322304A1 Method of manufacturing an impregnated cathode, and cathode manufactured according to this method |
| 06/27/1989 | US4843277 Single crystal emitter with heater wire embedded therein |
| 06/21/1989 | EP0321147A2 Photoelectron mask and photo cathode image projection method using the same |
| 06/20/1989 | US4840767 Method of making a cathode from tungsten and iridium powders using a barium iridiate formed from barium peroxide and iridium oxide as the impregnant |
| 06/13/1989 | US4839511 Enhanced sensitivity photodetector having a multi-layered, sandwich-type construction |
| 06/07/1989 | CN1004452B Cathod for electric valve |
| 06/06/1989 | US4837480 Simplified process for fabricating dispenser cathodes |
| 05/30/1989 | US4835438 Source of spin polarized electrons using an emissive micropoint cathode |
| 05/24/1989 | EP0317002A1 Scandate cathode |
| 05/23/1989 | US4833507 Electron emission device |
| 05/23/1989 | US4833362 Encapsulated high brightness electron beam source and system |
| 05/23/1989 | US4833361 Impregnated cathode having cathode base body and refractory metal support welded together |
| 05/17/1989 | EP0316214A1 Electron source comprising emissive cathodes with microtips, and display device working by cathodoluminescence excited by field emission using this source |
| 05/17/1989 | EP0316196A2 An electron gun design using a lanthanum hexaboride cathode |
| 05/17/1989 | CN1032989A X-ray photocathode, image enhancer and imaging instrument |
| 05/16/1989 | CA1254307A1 Electron beam apparatus comprising a semiconductor electron emitter |
| 05/10/1989 | CN1032883A Electron gun assembly having reinforced heater tab |
| 05/09/1989 | US4829355 Photocathode having internal amplification |
| 05/05/1989 | WO1989004087A1 Microwave integrated distributed amplifier with field emission triodes |
| 04/25/1989 | US4825082 Electron emitting apparatus |
| 04/25/1989 | CA1253260A1 Semiconductor device for generating an electron beam |
| 04/19/1989 | EP0312007A2 Electron beam emitting device and image displaying device by use thereof |
| 04/18/1989 | US4823044 Dispenser cathode and method of manufacture therefor |
| 04/12/1989 | EP0311501A1 Strongly built oxide cathode for cathode ray tubes |
| 04/12/1989 | CN1003897B Photo-cathode conducting substrate |
| 04/11/1989 | US4820954 Indirectly heated cathode structure for electron tubes |
| 04/05/1989 | EP0309767A1 Beam generating system for electron beam measuring instruments |
| 03/28/1989 | US4816724 Display device and method of driving the same |
| 03/28/1989 | US4816183 Composite photosensitive material |
| 03/15/1989 | CN1031776A Cathode for tube |
| 03/14/1989 | US4812716 Electron beam scanning display apparatus with cathode vibration suppression |
| 03/08/1989 | EP0306247A1 Electron gun assembly having a reinforced heater tab |
| 03/08/1989 | EP0306173A1 Field emission devices |
| 03/07/1989 | US4810934 Electron emission device |
| 03/07/1989 | US4810926 Tungsten, ammonium tungstate, roasting, sintering, surface treatment, transition metal and barium reagents |
| 03/07/1989 | US4810925 Directly heated cathodes |
| 02/21/1989 | US4806818 Method of providing electrical contact to a semiconductor cathode, cathode so produced, and electron tube provided with such cathode |
| 02/14/1989 | US4804887 Display device with vibration-preventing plate for line cathodes |
| 02/07/1989 | US4803398 Electron gun with one directly heatable and one indirectly heatable cathode |
| 02/07/1989 | US4803397 Indirectly heated dispenser metal capillary cathode for electrical discharge devices |
| 02/01/1989 | EP0301545A2 Surface conduction electron-emitting device |
| 02/01/1989 | CN1030845A 氧化物阴极 Oxide cathode |
| 01/31/1989 | US4801994 Semiconductor electron-current generating device having improved cathode efficiency |
| 01/26/1989 | DE3723565A1 Television video replay device |
| 01/25/1989 | EP0300568A1 Oxide cathode |
| 01/18/1989 | EP0299461A2 Electron-emitting device |