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:
Jul. 13, 2010
Filed:
Apr. 18, 2007
Applicants:
Hozumi Ueda, Tokyo, JP;
Tatsumi Nishino, Tokyo, JP;
Takahide Kitahara, Aichi-ken, JP;
Inventors:
Assignee:
Denso Corporation, Aichi-Ken, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01Q 7/08 (2006.01); H01Q 21/00 (2006.01); H01Q 11/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
The size of an antenna coil is reduced, and it is possible to prevent a lowering of the reception sensitivity due to a difference of the arrangement position of the antenna coil. On a winding frame of a ferrite core, a first coil and a second coil are wound in such a manner that their winding axes orthogonally intersect each other. A third coil is wound around an outer circumference of the first coil and the second coil in such a manner that the third coil's winding axis orthogonally intersects the winding axes of the first coil and the second coil.