The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 6987431 B1

PDF
Full Text
Expired
Date of Patent:
Jan. 17, 2006

Filed:

Dec. 31, 2003
Applicant:

Ming-chih Tsai, Taoyuan, TW;

Inventor:

Ming-chih Tsai, Taoyuan, TW;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An electromagnetic interference filter is disclosed. An inductance coil with four wires extended there-from, a ceramic capacitance board, a metallic film capacitance and a grounded wire are included. The ceramic capacitance board is provided with a plurality of metallic film areas on a first surface and one metallic film area on a second surface and thus forms a plurality of separate capacitance electrodes on it. The invention is characterized in that two wires extended from the inductance coil are electrically connected to the capacitance electrodes while the other two wires extended from the inductance coil are electrically connected to the wires of the metallic film capacitance, and one terminal of the grounded wire is electrically connected to the metallic film area on the second surface of the ceramic capacitance board.


Find Patent Forward Citations

Tsai, Ming-chih. (2006). Electromagnetic interference filter (U.S. Patent No. 6987431). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6987431

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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