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 7548210 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 16, 2009

Filed:

Oct. 10, 2006
Applicants:

Kenji Hashiguchi, Miyazaki, JP;

Hitoshi Kawano, Miyazaki, JP;

Kazuyuki Kuriyama, Miyazaki, JP;

Inventors:

Kenji Hashiguchi, Miyazaki, JP;

Hitoshi Kawano, Miyazaki, JP;

Kazuyuki Kuriyama, Miyazaki, JP;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 1/32 (2006.01);
U.S. Cl.
CPC ...
Abstract

Provided is an internal antenna device in such a form as a door handle for a smart entry system and an electronic key that can provide a metallic appearance similar to that of a metallic plating while avoiding a loss in the antenna output and ensuring a stable communication. A metallic thin film is deposited on a surface of an outer cover () that receives an antenna of the internal antenna device by sputtering. Cr (chromium) may be selected for the sputtering target, and the film thickness may be in the range of 0.05 μm to 0.20 μm to produce the appearance of a metallic surface. A double layer structure may be used by forming a coating consisting of acrylic urethane paint and having a thickness of 5 μm to 50 μm on the metallic film () to protect the metallic film () on the surface of the outer cover ().


Find Patent Forward Citations

Hashiguchi, Kenji. (2009). Internal antenna device (U.S. Patent No. 7548210). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7548210

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

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