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 7148768 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 12, 2006

Filed:

Aug. 20, 2004
Applicants:

Koichi Yanagisawa, Ueda, JP;

Fuchun Zhang, Ueda, JP;

Inventors:

Koichi Yanagisawa, Ueda, JP;

Fuchun Zhang, Ueda, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 7/01 (2006.01);
U.S. Cl.
CPC ...
Abstract

A filter element includes a coil part formed in an overall tube-like shape by layering a signal transmitting belt-like conductor and a grounding belt-like conductor with a belt-like insulator in between and winding so that the grounding belt-like conductor is outside the signal transmitting belt-like conductor, a magnetic body being attached to a center of the coil part; an input terminal that is connected to an outermost circumferential part of the signal transmitting belt-like conductor and is led from an outer circumferential position of the coil part; an output terminal that is connected to an innermost circumferential part of the signal transmitting belt-like conductor and is led from a central position of the coil part located on an opposite side to a leading position of the input terminal with the magnetic body in between; and a grounding terminal that is connected to an outermost circumferential part of the grounding belt-like conductor and is led from an outer circumferential position of the coil part located on an opposite side to a leading position of the input terminal with a leading position of the output terminal in between. In this way, a filter element with superior attenuation characteristics is realized.


Find Patent Forward Citations

Yanagisawa, Koichi. (2006). Filter element (U.S. Patent No. 7148768). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7148768

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