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:
May. 22, 2007
Filed:
Mar. 11, 2004
Applicant:
Teruo Mori, Tokyo, JP;
Inventor:
Teruo Mori, Tokyo, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L 9/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A pressure sensorincludes a casingconfigured to be able to be filled with a fluidsuch as a liquid or a gas, in which at least part of a surface contacting this fluidis formed of a giant magnetostrictive membermade of a giant magnetostrictive element, and detecting means for detecting a change in magnetic permeability or an amount of remanent magnetization attributable to expansion and contraction of the giant magnetostrictive memberbased on a pressure change of the fluidfilled in this casingThe pressure sensorcan detect pressure at high sensitivity and high accuracy in a short time while achieving miniaturization of a device at the same time.