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:
Dec. 15, 1981
Filed:
May. 08, 1980
Applicant:
Inventor:
Kiyozo Koshiishi, Sagamihara, JP;
Assignee:
Olympus Optical Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
2041 / ; 128635 ; 2041 / ; 2041 / ; 2041 / ; 2041 / ; 357 25 ;
Abstract
A compound chemically sensitive element comprises a chemically sensitive assembly which is selectively sensitive to a specific ion or a specific substance in a material to be examined, and a pH sensor having an insulated gate field effect transistor structure, both of which are separately manufactured. The chemically sensitive assembly and the insulated gate of the pH sensor are electrochemically connected together by a conductive resin, thus improving the durability and the selectivity of the element. In this manner, limitations imposed upon the manufacture of MOS pH sensor is removed, permitting a wide variety of chemically sensitive films to be used.