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:
Feb. 10, 1981
Filed:
Oct. 24, 1979
Applicant:
Inventors:
Assignee:
Fuji Photo Film Corporation, Minami-ashigara, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
2041 / ; 2041 / ; 2041 / ;
Abstract
An ion selection electrode device for measuring concentrations of predetermined ions such as in biological samples in which measuring electrodes are disposed on a planar substrate with their active heads lying within a circle of small radius. A small sample of a liquid to be measured is dropped on and spreads over the circle contacting each electrode. In a preferred embodiment, two sets of electrodes are provided around adjacent circles on a single substrate, one for the sample and the other for a standard reference fluid. A dam separates the two liquids but electrical contact therebetween is provided by a porous bridge.