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:
Mar. 09, 1999
Filed:
Jun. 11, 1997
Applicant:
Inventors:
Assignees:
Agency of Industrial Science & Technology, Tokyo, JP;
Research Development Corporation, Kawaguchi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
436 41 ; 73 2901 ; 7333501 ; 73 73 ; 422 8205 ; 422 8209 ; 436 39 ; 436164 ;
Abstract
A humidity detection material includes oxide of at least one metal selected from the group consisting of Mg, Ca, Mn, Fe, Co, Ni, and Cu. The metal oxide is preferably in the form of a porous material. The metal oxide is formed preferably in the form of a thin film on a transparent substrate. The humidity detection material is contacted with water vapor in the presence of a gas such as air, and the optical absorbance of the humidity detection material is measured to detect the humidity. The humidity can be detected by an optical method.