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:
Jan. 18, 2022
Filed:
Aug. 08, 2019
Hitachi, Ltd., Tokyo, JP;
Masuyoshi Yamada, Tokyo, JP;
Hironori Wakana, Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
An exhaled gas detector includes: a gas detection element configured to measure a specific gas; and an analysis unit configured to analyze a signal output from the gas detection element. The gas detection element measures the specific gas in an exhalation of non-drinking time and generates a first reference signal value. The analysis unit calculates a first threshold value on the basis of the first reference signal value. The gas detection element measures the specific gas in an inspection gas and generates a first measurement signal value. The analysis unit determines that the inspection gas is identified with an exhalation of a person by determining that the first measurement signal value has exceeded the first threshold value.