CAPACITIVE CHEMICAL SENSOR USING AN ION EXCHANGE SURFACE - Patent 0273920

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EP 0 273 920 A1

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(43)	Date of publication:
	13.07.1988 Bulletin 1988/28

(21)	Application number: 87902201.0

(22)	Date of filing: 27.02.1987

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International Patent Classification (IPC):

G01N 27/ 00^{( . )}

G01N 27/ 22^{( . )}

(86)	International application number:
	PCT/US1987/000381

(87)	International publication number:
	WO 1987/006002 (08.10.1987 Gazette 1987/22)

(84)	Designated Contracting States:
	AT CH DE FR GB IT LI NL SE

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Priority:

01.04.1986 US 19860847073

(71)	Applicant: THE JOHNS HOPKINS UNIVERSITY
	Baltimore, Maryland 21205 (US)

(72)	Inventors:
	STANBRO, William, D. Columbia, MD 21044 (US) NEWMAN, Arnold, L. Kensington, MD 20895 (US)

(74)	Representative: Koepsell, Helmut, Dipl.-Ing.
	Mittelstrasse 7 D-50672 Köln D-50672 Köln (DE)

(54)	CAPACITIVE CHEMICAL SENSOR USING AN ION EXCHANGE SURFACE