TERNARY OPTICAL ELEMENTS AND METHODS - Patent 0372051

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EP 0 372 051 A1

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(43)	Date of publication:
	13.06.1990 Bulletin 1990/24

(21)	Application number: 89906255.0

(22)	Date of filing: 01.05.1989

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International Patent Classification (IPC):

G11B 7/ 00^{( . )}
G11B 7/ 013^{( . )}
G11B 7/ 244^{( . )}

G11B 7/ 0045^{( . )}
G11B 7/ 24^{( . )}

(86)	International application number:
	PCT/US1989/001831

(87)	International publication number:
	WO 1989/011147 (16.11.1989 Gazette 1989/27)

(84)	Designated Contracting States:
	DE FR GB NL

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Priority:

11.05.1988 US 19880192453

(71)	Applicant: EASTMAN KODAK COMPANY (a New Jersey corporation)
	Rochester, New York 14650 (US)

(72)	Inventors:
	FLEMING, James, Charles Webster, NY 14580 (US) MEICHLE, Michael, Eric Rochester, NY 14617 (US) FITZPATRICK, James Rochester, NY 14607 (US)

(74)	Representative: Brandes, Jürgen, Dr. rer. nat.
	Wuesthoff & Wuesthoff Patent- und Rechtsanwälte Schweigerstrasse 2 D-81541 München D-81541 München (DE)

(54)	TERNARY OPTICAL ELEMENTS AND METHODS