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:
Apr. 07, 1992
Filed:
Feb. 12, 1991
Applicant:
Inventors:
Yasuhisa Shibata, Oomiya, JP;
Naoto Oki, Hitachi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
204416 ; 204418 ;
Abstract
A calcium ion selective electrode having a sensitive membrane comprising an organic polymeric substance, a plasticizer and a calcium ion sensitive substance of neutral carrier type, wherein the dielectric constant of the plasticizer is 10 or less, thus remarkably improving the responsiveness and stability of the electrode.