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:
Dec. 10, 2013
Filed:
Jun. 15, 2010
Shunichi Wakamatsu, Sayama, JP;
Shunichi Wakamatsu, Sayama, JP;
Nihon Dempa Kogyo Co., Ltd., Tokyo, JP;
Abstract
To provide a sensing device capable of easily sensing a substance to be sensed with high accuracy. When sensing, by supplying a sample solution to an absorption layerwhile oscillating a quartz-crystal resonatorto make the absorption layer absorb a substance to be sensed in the sample solution, the substance to be sensed based on an amount of variation in an oscillation frequency of the quartz-crystal resonatorafter an absorption time elapses, the quartz-crystal resonatoris oscillated, before supplying the sample solution to the absorption layer, to measure the oscillation frequency of the quartz-crystal resonatorat a predetermined measurement interval, for instance, at every one second, and the oscillation frequency of the quartz-crystal resonatoris stabilized for the same period of time as a measuring timeuntil the measurement result becomes equal to or less than a frequency tolerance valuepreviously set based on a measurement sensitivity of the substance to be sensed.