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. 19, 2026
Filed:
Mar. 21, 2024
Asahi Kasei Microdevices Corporation, Tokyo, JP;
Takaaki Furuya, Tokyo, JP;
Yoshihiko Koizumi, Tokyo, JP;
Yuta Takagi, Tokyo, JP;
Naoya Ugomori, Tokyo, JP;
Naoya Iwata, Tokyo, JP;
Asahi Kasei Microdevices Corporation, Tokyo, JP;
Abstract
A gas sensor () includes a gas measuring unit () including a light source () provided on a substrate, a detector () provided on the substrate and configured to detect a signal based on light emitted from the light source, and a gas detection space () provided with a hole for gas to pass through. The natural frequency of a resonance mode of the gas measuring unit is f, and the driving frequency of the light source is from 0.9f or more to 1.1f or less. A distribution of sound pressure is generated in the gas detection space by driving of the light source, and the light source and the detector are each arranged in a region that is 70% or more of the maximum absolute value of the sound pressure.