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.:
Date of Patent:
Sep. 08, 2009
Filed:
Apr. 27, 2006
Applicants:
Akira Miyoshi, Tokyo, JP;
Takao Kato, Akita, JP;
Junichi Noro, Akita, JP;
Inventors:
Assignee:
Mitsumi Electric Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01Q 1/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
An antenna unit comprises a hollow cylindrical member obtained by forming a flexible insulating film member into a hollow cylinder about a center axis and an antenna pattern composed of a plurality of conductors formed on a peripheral surface of the hollow cylindrical member. The antenna pattern comprises a helical pattern extending helically in a direction of the center axis and a loop pattern connected to an end portion of the helical pattern at an upper end portion of the hollow cylindrical member.