H01J 1/22

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
9818570 Ion source for multiple charged speciesDec 17, 15Nov 14, 17VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES, INC.
9309871 Hall-effect motor in which the temperature of the cathode-heating device is controlledApr 29, 11Apr 12, 16SNECMA
9236212 Tungsten wire, cathode heater and vibration service lamp filamentMay 15, 12Jan 12, 16KABUSHIKI KAISHA TOSHIBA
7847483 Glass composition and display panel using sameSep 01, 06Dec 07, 10PANASONIC CORPORATION
6242854 Indirectly heated cathode for a CRT having high purity alumina insulating layer with limited amounts of Na OR SiJan 11, 99Jun 05, 01MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
5729082 Cathode structure comprising a heating elementJul 09, 96Mar 17, 98U.S. PHILIPS CORPORATION
5444327 Anisotropic pyrolytic graphite heaterJun 30, 93Aug 22, 95COMMUNICATIONS & POWER INDUSTRIES, INC.
5350969 Cathode heater and cathode assembly for microwave power tubesDec 03, 91Sep 27, 94LITTON SYSTEMS, INC.
5218263 High thermal efficiency dispenser-cathode and method of manufacture thereforAug 08, 91Jun 08, 93CERADYNE, INC.
5038071 Heater for indirectly-heated cathodeMar 01, 89Aug 06, 91HITACHI, LTD.
4843277 Single crystal emitter with heater wire embedded thereinSep 28, 87Jun 27, 89BALZERS AKTIENGESELLSCHAFT
4734612 High pressure metal vapor discharge lampJun 26, 86Mar 29, 88KABUSHIKI KAISHA TOSHIBA
4596942 Field emission type electron gunFeb 14, 84Jun 24, 86National Institute for Researches in Inorganic Materials
4379980 Quick operating cathodeApr 20, 81Apr 12, 83Tokyo Shibaura Denki Kabushiki Kaisha