Capacitor powder

Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing

Reexamination Certificate

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C423S594800, C361S528000

Reexamination Certificate

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07833511

ABSTRACT:
Disclosed herein are capacitors having an anode based on niobium and a barrier layer based on niobium pentoxide, at least the barrier layer having a content of vanadium and process for their preparation and use.

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patent: 2636279 (1978-06-01), None
A.D. Modestov, A.D. Dadydov, “Capacitance and photocurrent study of electronic properties of anodic oxide films on Nb and Ta Evaluation of the ioznized donor concentration profile in Nb2O5film.” J. Electroanalytical Chem. 1999, 460, pp. 214-225.
F. DiQuarto, et al., “Amorphous Semiconductor-Electrolyte Junction Impedance Study on the a-Nb2O5-Electrolyte Junction” Electroanalytical Chem. 1990, 35, p. 99.
K.E. Heusler, M. Schulze, “Electron-Transfer Reactions at Semiconducting Anodic Niobium Oxide Films.” Electrochim. Acta 1975, 20, p. 237.
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N. F. Jackson, J.C. Hendy, “The Use of Niobium as an Anode Material in Liquid Filled Electrolytic Capacitors.” Electrocomponent Science & Tech. 1974, 1, 27-37.
Y. Pozdeev “Comparison of Tantalum and Niobium Solid Electrolytis Capacitors.” CARTS-EUROPE '97: 11th European Passive Components Symposium.

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