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 7031744 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 18, 2006

Filed:

Dec. 03, 2001
Applicants:

Toshihide Kuriyama, Tokyo, JP;

Eiji Hankui, Tokyo, JP;

Inventors:

Toshihide Kuriyama, Tokyo, JP;

Eiji Hankui, Tokyo, JP;

Assignee:

NEC Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A compact cellular phone with a foldable configuration and two planar antennas having outward directivities are provided inside the compact cellular phone in the foldable configuration. An interval between the two planar antennas provided to a pair of housings is equal to or wider than a width of a human palm in a state in which the compact cellular phone is open. The two planar antennas are planar inverse F-type antennas or patch antennas and impedance around each of the two planar antennas is measured. Then, one of the two planar antennas, which has a preferred transmission characteristic, is selected and used.


Find Patent Forward Citations

Kuriyama, Toshihide. (2006). Compact cellular phone (U.S. Patent No. 7031744). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7031744

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

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