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:
Oct. 28, 2008

Filed:

Oct. 31, 2005
Applicants:

Takashi Inukai, Kawasaki, JP;

Yukihiro Urakawa, Kawasaki, JP;

Inventors:

Takashi Inukai, Kawasaki, JP;

Yukihiro Urakawa, Kawasaki, JP;

Assignee:

Kabushiki Kaisha Toshiba, Minato-Ku, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 7/10 (2006.01); H03K 5/08 (2006.01);
U.S. Cl.
CPC ...
Abstract

A semiconductor device has a semiconductor element connected to an input/output terminal and a reference voltage terminal, a first rectifier element connected between the input/output terminal and the reference voltage terminal, which performs rectifier operation to prevent a voltage of the input/output terminal from becoming higher than a voltage of the reference voltage terminal by a predetermined value or more, and a second rectifier element connected between the input/output terminal and the reference voltage terminal, which performs rectifier operation to prevent the voltage of the reference voltage terminal from becoming higher than the voltage of the input/output terminal by a predetermined value or more.


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