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:
Jul. 19, 2011

Filed:

Dec. 17, 2007
Applicants:

Junichi Wada, Chita-gun, JP;

Junji Shirai, Kariya, JP;

Inventors:

Junichi Wada, Chita-gun, JP;

Junji Shirai, Kariya, JP;

Assignee:

Denso Corporation, Kariya, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 27/30 (2006.01);
U.S. Cl.
CPC ...
Abstract

An ignition coil, which includes a primary coil and a secondary coil, has an electrical insulating member. The electrical insulating member includes an insulating material being a base material. The electrical insulating member further includes a reactive agent being an additive added to the insulating material for causing dehydration-decomposition, so as to enhance durability when being applied with high voltage. Alternatively, a reactive agent is coated on a surface of the electrical insulating body for causing dehydration-decomposition, so as to enhance durability when being applied with high voltage.


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