Ion sensors and their divided parts

Details Ion sensors and their divided parts Ion sensors and their divided parts

1988-10-13

1990-05-01

Kaplan, G. L.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204418, 357 25, G01N 2730

Patent

active

049215914

ABSTRACT:
An ion sensor includes an ion sensitive membrane formed from a vinyl polymer based compound containing a hydroxyl and/or carboxyl group. The membrane is provided on an extended gate electrode on a gate electrode of a field-effect type transistor. The ion sensor also includes a reference electrode arranged in opposition to the extended gate electrode. The extended gate electrode and reference electrode are formed on a substrate different from the substrate on which the field-effect type transistor is formed. A divided part for an ion sensor is also provided and includes the portions of the ion sensor discussed above except for the reference electrode. The divided part is used with a separate reference electrode.

REFERENCES:
patent: 4020830 (1977-05-01), Johnson et al.
patent: 4437969 (1984-03-01), Covington et al.
patent: 4508613 (1985-04-01), Busta et al.
patent: 4735702 (1988-04-01), Reinhoudt et al.
patent: 4778769 (1988-10-01), Forrest et al.

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