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. 05, 2021
Filed:
Mar. 15, 2018
Applicant:
Taiyo Yuden Co., Ltd., Tokyo, JP;
Inventors:
Masashi Hattori, Takasaki, JP;
Junji Oshita, Takasaki, JP;
Assignee:
TAIYO YUDEN CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 29/02 (2006.01); G01N 33/00 (2006.01); G01N 5/02 (2006.01); G01N 29/036 (2006.01);
U.S. Cl.
CPC ...
G01N 29/022 (2013.01); G01N 5/025 (2013.01); G01N 29/036 (2013.01); G01N 33/0027 (2013.01); G01N 2291/014 (2013.01); G01N 2291/0255 (2013.01); G01N 2291/0256 (2013.01); G01N 2291/02845 (2013.01); G01N 2291/0426 (2013.01);
Abstract
A gas detection element includes a crystal oscillator and a gas adsorption film formed on the crystal oscillator. The gas adsorption film has a thickness that causes the detection element to have a crystal impedance of no more than 10 times the crystal impedance of the crystal oscillator on which the gas adsorption film is not formed. A resonance frequency variation of the gas detection element due to humidity variation can be kept within a certain range.