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:
Oct. 15, 2019
Filed:
Nov. 11, 2015
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Ryozo Takasu, Isehara, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
An environment measuring devicehas a measuring QCM sensor, a reference QCM sensor, a measurement oscillation circuit, a reference oscillation circuit, a frequency counter, a humidity sensor, a control unit, and a storage unit. The measuring QCM sensorhas an oscillator and an electrode formed by a corrosive metal on the surface of the oscillator, and the reference QCM sensorhas an oscillator and an electrode formed by a corrosion-resistant metal on the surface of the oscillator. The storage unitstores the measurement count signal, the reference count signal, and the humidity signal which are associated with a measurement time. The control unitdetermines an amount of increase in mass due to the corrosion of the electrode of the measuring QCM sensor by using the measurement count signal and the reference count signal.