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:
Sep. 17, 1991
Filed:
Sep. 08, 1989
Yoshio Okahata, Kanagawa, JP;
Sogo Pharmaceutical Company Limited, Tokyo, JP;
Abstract
A method of determining the amount of the substances or ions contained in an ionic solution or a non-deionized solution by measuring the frequency of a one side barrier-covered crystal oscillator comprising a crystal oscillator, a barrier to cover over one of the electrodes of the crystal oscillator through a predetermined insulative space so as to prevent the ionic solution or the non-deionized solution from permeating therethrough and an adsorption film cast on the other electrode of the crystal oscillator, in situ in the state that the one side barrier-covered crystal oscillator is dipped in the ionic solution or the non-deionized solution, and the one side barrier-covered crystal oscillator used therefor.