U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Electric double layer capacitor

Patent 4862328 Issued on August 29, 1989. Estimated Expiration Date: Icon_subject March 28, 2008. 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 References

3615841

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Inventor: Okita

Method of making thin porous strips for fuel cell electrodes
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Issued on: 03/02/1982
Inventor: Groult ,   et al.

Electric double layer capacitor
Patent #: 4327400
Issued on: 04/27/1982
Inventor: Muranaka ,   et al.

Extraction treatment
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Patent #: 4397907
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Inventor: Rosser ,   et al.

Strengthening of carbon black-teflon-containing electrode
Patent #: 4405544
Issued on: 09/20/1983
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Double layer capacitor
Patent #: 4438481
Issued on: 03/20/1984
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Battery electrode and method of making
Patent #: 4556618
Issued on: 12/03/1985
Inventor: Shia

Electric double layer capacitor
Patent #: 4562511
Issued on: 12/31/1985
Inventor: Nishino ,   et al.

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Inventors

Assignee

Application

No. 07/177854 filed on 03/28/1988

US Classes:

361/502, Double layer electrolytic capacitor252/62.2, ELECTROLYTES FOR ELECTRICAL DEVICES (E.G., RECTIFIER, CONDENSER)264/105, Conductive carbon containing264/127, Fluorocarbon resin264/288.8, Nonuniform product (e.g., porous, etc.) or with tensioning before application of heat264/41, PORE FORMING IN SITU (E.G., FOAMING, ETC.)264/49, By treating occluded solids29/25.03, Electrolytic device making (e.g., capacitor)429/162Flat-type unit cell and specific unit cell components

Examiners

Primary: Thurlow, Jeffery
Assistant: Tentoni, Leo B.

Attorney, Agent or Firm

International Class

H01G 9/00 (20060101)

Foreign Application Priority Data

1985-08-13 JP

Abstract

A polarizable electrode for an electric double layer capacitor, composed of a continuously micro-porous structure of a fluorine-containing polymer resin with a fine carbon powder incorporated therein, wherein said structure includes a numerous fine nodes of the resin and fine fibers of the resin three dimensionally connecting the nodes so that the nodes are partially in contact with or connected to one another, and the fine carbon powder is contained substantially in the nodes.

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