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Class Information
Number: 313/479
Name: Electric lamp and discharge devices > Cathode ray tube > Envelope > Coating or shielding
Description: Subject matter including means for protecting the envelope or preventing radiation from entering or leaving the envelope.










Patents under this class:
1 2 3 4 5 6 7 8 9 10

Patent Number Title Of Patent Date Issued
4563612 Cathode-ray tube having antistatic silicate glare-reducing coating Jan. 7, 1986
4560900 Cathode ray tube device with electromagnetic shield casing Dec. 24, 1985
4550032 Electric discharge tube and method of manufacturing an electrically conductive layer on a wall portion of the envelope of such a tube Oct. 29, 1985
4528477 CRT with optical window Jul. 9, 1985
4518893 CRT with internal neck coating of crystalline tin oxide for suppressing arcing therein May. 21, 1985
4517494 Screening structure for a cathode ray tube display May. 14, 1985
4513221 CRT Internal shielding means for a spun glass envelope funnel section Apr. 23, 1985
4503357 Cathode-ray tube Mar. 5, 1985
4485329 CRT Incorporating x-ray absorbing means Nov. 27, 1984
4473774 CRT with internal neck coating for suppressing arcing therein Sep. 25, 1984
4472657 Support frame for color cathode-ray tube Sep. 18, 1984
4471264 Cathode ray tube Sep. 11, 1984
4467241 CRT With magnetic shield Aug. 21, 1984
4450387 CRT With internal thermionic valve for high voltage control May. 22, 1984
4433267 CRT Internal contactor positioning means Feb. 21, 1984
4403170 Color picture tubes Sep. 6, 1983
4392083 Radiation shield for a cathode ray tube Jul. 5, 1983
4385256 Color picture tube provided with an inner magnetic shield May. 24, 1983
4380715 Color television display tube with resistor for interference radiation reduction Apr. 19, 1983
4379762 Method of producing picture tube coating compositions Apr. 12, 1983
4374344 Color picture tube with electrically conductive frit film on envelope surface Feb. 15, 1983
4344015 Screen contact means for a cathode ray tube Aug. 10, 1982
4342943 P.sub.2 O.sub.5 -V.sub.2 O.sub.5 -PbO glass which reduces arcing in funnel portion of CRT Aug. 3, 1982
4298821 Electron tube with particle trap integral with envelope wall Nov. 3, 1981
4298894 Image pick-up tube Nov. 3, 1981
4288719 CRT With means for suppressing arcing therein Sep. 8, 1981
4276494 Cathode ray tube with transversely supported electrode and conductive wall coating Jun. 30, 1981
4272701 Cathode ray tube arc limiting coating Jun. 9, 1981
4255689 Cathode ray tube with resistor means on glass support rods Mar. 10, 1981
4251749 Picture display tube having an internal resistive layer Feb. 17, 1981
4249107 Cathode ray tube having amorphous resistive film on internal surfaces and method of forming the film Feb. 3, 1981
4234816 Cathode ray tube with internal arc suppressor and protective spark gap Nov. 18, 1980
4232247 Projection tube with X-ray shielding means on target Nov. 4, 1980
4232248 Internal metal stripe on conductive layer Nov. 4, 1980
4229675 Color picture tube with internal funnel shaped magnetic shield Oct. 21, 1980
4217521 High potential static discharge means for television cathode ray tubes Aug. 12, 1980
4217519 Isolation busbar for a flat panel display device Aug. 12, 1980
4210844 Cathode ray tube arc suppressor coating Jul. 1, 1980
4207493 Cathode ray tube arc-over protection Jun. 10, 1980
4198588 Anode button for a cathode ray tube Apr. 15, 1980
4191973 Shielding means for television picture tube electrical _feed-through receptacles Mar. 4, 1980
4188564 Cathode ray tube having low resistance contact area beneath high voltage contact spring Feb. 12, 1980
4163919 Cathode ray tube internal resistive coating and method of manufacture Aug. 7, 1979
4153857 Television cathode ray tube having getter flash tolerant internal resistive element May. 8, 1979
4152745 Magnetic shield device May. 1, 1979
4124540 Resistive electrical conductive coating for use in a cathode ray tube Nov. 7, 1978
4119885 Cathode ray tube Oct. 10, 1978
4101803 Arc suppression and static elimination system for a television CRT Jul. 18, 1978
4092444 Cathode ray tube having amorphous resistive film on internal surfaces and method of forming the film May. 30, 1978
4052641 Electrically conductive coating in cathode ray tube Oct. 4, 1977

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