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:
Sep. 02, 2008
Filed:
Dec. 13, 2005
Applicants:
Kumiko Takikawa, Tama, JP;
Satoshi Tanaka, Kokubunji, JP;
Inventors:
Kumiko Takikawa, Tama, JP;
Satoshi Tanaka, Kokubunji, JP;
Assignee:
Renesas Technology Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 3/20 (2006.01); H02H 3/22 (2006.01); H02H 9/04 (2006.01); H01L 23/60 (2006.01);
U.S. Cl.
CPC ...
Abstract
An IC having inputs and outputs for a plurality of frequency bands from a high frequency band to a low frequency band is protected from electrostatic damage. A high-frequency section of the IC is provided with a protection circuit including diode-connected transistors connected by multiple stages. In addition, there are applied the transistors in which elements thereof are isolated by insulator that can prevent thyristor operation.