OPTICAL SENSOR SYSTEM FOR pH DETERMINATION INDEPENDENTLY OF THE ION STRENGTH USING FLUORESCEIN BOUND TO A POLYMER VIA A URETHANE AND/OR UREA GROUP - Patent 0906566

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EP 0 906 566 A1

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(43)	Date of publication:
	07.04.1999 Bulletin 1999/14

(21)	Application number: 97927171.0

(22)	Date of filing: 11.06.1997

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International Patent Classification (IPC):

G01N 33/ 52^{( . )}
G01N 21/ 80^{( . )}
G01N 33/ 84^{( . )}

G01J 3/ 44^{( . )}
G01N 31/ 22^{( . )}

(86)	International application number:
	PCT/EP1997/003037

(87)	International publication number:
	WO 1997/047966 (18.12.1997 Gazette 1998/02)

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

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Priority:

12.06.1996 CH 19960001475

(71)	Applicant: Novartis AG
	4058 Basel (CH)

(72)	Inventors:
	BARNARD, Steven, Mark Framingham, MA 01701 (US) BECKELMANN, Dirk 66807 Nalbach (DE) BERGER, Joseph 4132 Muttenz (CH) ROUILLY, Marizel CH-5073 Gipf-Oberfrick (CH) WALDNER, Adrian CH-4123 Allschwil (CH)

(74)	Representative: Becker, Konrad, et al
	Novartis AG Geistiges Eigentum Konzern Patent- und Markenabteilung CH Postfach 4002 Basel 4002 Basel (CH)

(54)	OPTICAL SENSOR SYSTEM FOR pH DETERMINATION INDEPENDENTLY OF THE ION STRENGTH USING FLUORESCEIN BOUND TO A POLYMER VIA A URETHANE AND/OR UREA GROUP