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.

Date of Patent:
Apr. 26, 2022

Filed:

Jul. 12, 2018
Applicant:

Tdk Corporation, Tokyo, JP;

Inventors:

Takashi Kudo, Tokyo, JP;

Makoto Morita, Tokyo, JP;

Fuyuki Miura, Tokyo, JP;

Assignee:

TDK CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 27/28 (2006.01); H01F 5/04 (2006.01); H01F 27/30 (2006.01); H01F 27/29 (2006.01); H01F 27/255 (2006.01); H01F 41/02 (2006.01);
U.S. Cl.
CPC ...
H01F 5/04 (2013.01); H01F 27/255 (2013.01); H01F 27/2828 (2013.01); H01F 27/29 (2013.01); H01F 27/292 (2013.01); H01F 27/306 (2013.01); H01F 41/0246 (2013.01);
Abstract

A coil device includes a coil portion, an element body, and a terminal electrode. The coil portion is formed by a wire wound in a coil shape. The element body contains the coil portion where a part of an outer circumference of a lead-out part of the coil portion is exposed as an exposed portion from a bottom surface of the element body and where the rest of the outer circumference of the lead-out part of the coil portion is embedded as an embedded portion in the element body. The terminal electrode is formed on the bottom surface of the element body and connected with the exposed portion. An embedded length of the outer circumference of the lead-out part in the embedded portion is larger than a substantially half of a full length of the outer circumference of the lead-out part.


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