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:
Jul. 21, 1992
Filed:
Sep. 27, 1990
Applicant:
Inventors:
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
422 8207 ; 422 8208 ; 422 8201 ; 422 52 ; 422 8209 ;
Abstract
An optical sensor for detecting a specific substance in a solution, based on optical changes, includes a substrate and a thin membrane formed on the substrate. The membrane is formed of an ion complex material of an ionic amphipathic compound with a polymer having ionic groups of the opposite electrical charge, a potential-sensitive dye and a substance-selective compound.