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:
Aug. 04, 2009
Filed:
Jan. 28, 2005
Applicant:
Yoshinori Shizuno, Tokyo, JP;
Inventor:
Yoshinori Shizuno, Tokyo, JP;
Assignee:
Oki Semiconductor Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01P 1/02 (2006.01); G01P 15/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
Although a weight part of an acceleration sensor chip fixed on a die pad is coated with a gelatinous resin part of low elasticity, the weight part is easily displaced by an external acceleration. Thus, an acceleration can be detected with accuracy. Furthermore, long-term reliability equal to those of regular resin packages is ensured because those portions of an acceleration sensor device which are not used for acceleration sensing are sealed with a resin part.