Electrolytic capacitor

Details Electrolytic capacitor Electrolytic capacitor

2005-04-26

2005-04-26

Dinkins, Anthony (Department: 2831)

Electricity: electrical systems and devices

Electrolytic systems or devices

Liquid electrolytic capacitor

C361S511000, C361S530000

Reexamination Certificate

active

06885547

ABSTRACT:
A dielectric oxide film-having anode foil and a cathode foil put opposite to each other via a separator therebetween are coiled up to construct a capacitor device. In this, the separator is coated with an electroconductive polymer formed through chemical oxidation polymerization of a polymerizing monomer in a solution that contains at least a non-transition metal-based oxidizing agent and an organic acid compound. Even when the electrolytic capacitor with the capacitor device is driven in a high-humidity atmosphere and a large amount of water penetrates into it, the capacitor is free from a trouble of dedoping, and therefore keeps its high voltage-proofness and leak current stability. The electrolytic capacitor is resistant to heat and its ESR is low in a high-frequency region.

REFERENCES:
patent: 6229689 (2001-05-01), Kobayashi et al.
patent: 6288889 (2001-09-01), Komatsu et al.
patent: 6381121 (2002-04-01), Monden et al.
patent: 6430032 (2002-08-01), Sakai et al.
patent: 6430033 (2002-08-01), Mitsui et al.
patent: 64-90517 (1989-04-01), None
patent: 7-249543 (1995-09-01), None
patent: 11-186110 (1999-07-01), None

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