Multilayer capacitor comprising barium-titanate doped with silver and rare earth metal
Patent 6078494 Issued on June 20, 2000. Estimated Expiration Date: 
July 22, 2018. 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.
July 22, 2018. 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 ReferencesMultilayer ceramic chip capacitor Multilayer ceramic chip capacitor High energy density lead magnesium niobate-based dielectric ceramic and process for the preparation thereof Multilayer capacitor comprising tungsten-containing BaTiO3 Patent #: 5889647 InventorApplicationNo. 120627 filed on 07/22/1998US Classes:361/321.5, Composition501/136, Titanate containing501/137Barium titanateExaminersPrimary: Kincaid, KristineAssistant: Dinkins, Anthony Attorney, Agent or FirmInternational ClassesH01G 007/00H01G 004/06 Foreign Application Priority Data1997-08-28 DEAbstractA capacitor including a ceramic dielectric of a dielectric ceramic composition including a doped barium-calcium-zirconium-titanate of the composition (Ba1--μ-ν Aμ Dν Ca) [Ti1-x-δ-μ'-ν' Mnδ A'μ' Zrx ]z O3, where A=Ag, A'=Dy, Er, Ho, Y, Yb and Ga; D=Nd, Pr, Sm, Gd; D'=Nb, Mo, 0.10ࣘxࣘ0.25, 0ࣘμࣘ0.01, 0ࣘμ'ࣘ0.01, 0ࣘνࣘ0.01, 0 ν'0.01, 0<δࣘ0.01 and 0.995ࣘz<1 and 0ࣘࣘ0.05, and including at least two electrodes, is characterized by a high dielectric constant K and a long service life, a low loss factor, a high insulation resistance and a capacitance with a low voltage dependence. The temperature dependence of its dielectric constant K corresponds to the EIA-standard Y5V.Field of SearchSolid dielectricPlural dielectrics Ceramic, glass, or oxide particles With multilayer ceramic capacitor Including metallization coating Composition Composition Titanate, zirconate, stannate, niobate, or tantalate or oxide of titanium, zirconium, tin, niobium, or tantalum containing (e.g., dielectrics, etc.) Alkaline earth or magnesium containing Titanate containing Barium titanate And divalent metal oxide other than alkaline earth oxide or magnesium oxide And trivalent metal oxide Solid dielectric type | |
