Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yukihisa Ohsugi0
Naotake Okada0
Seiji Ishikawa0
Date of Patent
November 28, 2006
0Patent Application Number
109182060
Date Filed
August 13, 2004
0Patent Primary Examiner
Patent abstract
A device 1 for measuring a mass comprises a vibrator 2, driving means 3A, 3B, 3C, 3D for exciting a basic vibration in the vibrator 2, detecting means 4A, 4B for detecting a displacement of vibration in the vibrator 2 and an adsorption film 5 capable of adsorbing a substance for detection. The mass is measured based on a difference between a detected value of the displacement of vibration obtained from the detecting means 4A, 4B when the mass is not measured and a detected value of the displacement of vibration obtained from the detecting means 4A, 4B when the mass is measured.
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