Cold cathode
Patent 6580225 Issued on June 17, 2003. Estimated Expiration Date: 
May 31, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 31, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesLight emission element using a polycrystalline semiconductor material of III-V group compound Method of making wide band gap field emitter Surface conduction emitters for use in field emission display devices Field emission lamp structures Field electron emission materials and devices Patent #: 6097139 InventorsApplicationNo. 062037 filed on 05/31/2002US Classes:315/169.3, Electroluminescent device313/309, DISCHARGE DEVICES HAVING A MULTIPOINTED OR SERRATED EDGE ELECTRODE313/310, DISCHARGE DEVICES HAVING A THERMIONIC OR EMISSIVE CATHODE313/336, Point source cathodes315/169.1Diverse-type energizing or bias supplies to different electrodesExaminersPrimary: Philogene, HaissaAttorney, Agent or FirmInternational ClassG09G 003/10AbstractA carbon film having an area of insulating material surrounded by an area of conducing material, and an area of material between the area of insulating material and the area of conducting material having a graded dielectric constant which varies from high to low from the area of insulating material to the area of conducting material.Field of SearchDiverse-type energizing or bias supplies to different electrodesElectroluminescent device DISCHARGE DEVICES HAVING A THERMIONIC OR EMISSIVE CATHODE DISCHARGE DEVICES HAVING A MULTIPOINTED OR SERRATED EDGE ELECTRODE Point source cathodes Multipointed or serrated edge electrode Filament or wire shield or electrode Vacuum-type tube | |
