A POLISHING APPARATUS FOR FORMING ASPHERIC SURFACES - Patent 1024925

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EP 1 024 925 A1

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(43)	Date of publication:
	09.08.2000 Bulletin 2000/32

(21)	Application number: 98949148.5

(22)	Date of filing: 23.10.1998

(51)	International Patent Classification (IPC)⁷: B24B 13/06, B24B 49/02, B24B 49/16, B24D 13/12, B24B 13/00

(86)	International application number:
	PCT/GB9803/182

(87)	International publication number:
	WO 9921/682 (06.05.1999 Gazette 1999/18)

(84)	Designated Contracting States:
	DE GB

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Priority:

24.10.1997 US 62765 P
12.11.1997 US 65460 P
12.11.1997 GB 9723933

(71)	Applicant: Precitech Inc.
	Keene, New Hampshire 03431 (US)

(72)	Inventors:
	GERCHMAN, Mark, Craig Keene, NH 03431 (US) HOOGSTRATE, John, Raymond, Jr. Keene, NH 03431 (US) LOWELL, Thomas, Tyler Keene, NH 03431 (US) WALTER, Mark, McNinch, III Keene, NH 03431 (US) KONG, Qiang North York, Ontario M3J 3L9 (CA) TAMAS, Laszlo Toronto, Ontario M4L 2Z4 (CA) ZIMMERMANN, Robert Benicia, CA 94510 (US)

(74)	Representative: Beresford, Keith Denis Lewis et al
	2-5 Warwick CourtHigh Holborn London WC1R 5DJ London WC1R 5DJ (GB)

(54)	A POLISHING APPARATUS FOR FORMING ASPHERIC SURFACES