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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 9443648 B1

PDFFull Text
Date of Patent:
Sep. 13, 2016

Filed:

May. 07, 2014

Magnetic sheet for non-contact power receiving device, non-contact power receiving device, electronic apparatus, and non-contact charger

Applicants:

Kabushiki Kaisha Toshiba, Tokyo, JP;

Toshiba Materials Co., Ltd., Yokohama-shi, Kanagawa, JP;

Inventors:

Takao Sawa, Yokohama, JP;

Katsuhiko Yamada, Yokohama, JP;

Tadao Saito, Yokohama, JP;

Kiyoshi Nagasaki, Yokohama, JP;

Assignees:

KABUSHIKI KAISHA TOSHIBA, Minato-Ku, JP;

TOSHIBA MATERIALS CO., LTD., Yokohama-Shi, JP;

Attorney:

Foley & Lardner LLP

Primary Examiner:

Arun Williams

Int. Cl.
CPC ...
H02J 7/00 (2006.01); H01F 7/02 (2006.01); H01F 38/14 (2006.01); H01F 3/02 (2006.01); H01F 27/245 (2006.01); H02J 7/02 (2016.01); H01F 3/10 (2006.01); H01F 27/36 (2006.01); H01F 17/00 (2006.01);
U.S. Cl.
CPC ...
H01F 7/0247 (2013.01); H01F 3/02 (2013.01); H01F 3/10 (2013.01); H01F 27/245 (2013.01); H01F 27/365 (2013.01); H01F 38/14 (2013.01); H02J 7/0042 (2013.01); H02J 7/025 (2013.01); H01F 2017/0066 (2013.01); Y10T 428/24314 (2015.01); Y10T 428/24942 (2015.01); Y10T 428/24967 (2015.01); Y10T 428/31678 (2015.04);
Abstract

A magnetic sheet of an embodiment includes a laminate of a plurality of magnetic thin plates. The laminate constituting the magnetic sheet includes a first magnetic thin plate and a second magnetic thin plate different in kind from the first magnetic thin plate. The first magnetic thin plate has a magnetostriction constant exceeding 5 ppm in an absolute value, and the second magnetic thin plate has a magnetostriction constant of 5 ppm or less in an absolute value. Alternatively, the first magnetic thin plate has a thickness of from 50 to 300 μm, and the second magnetic thin plate has a thickness of from 10 to 30 μm.

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