(19)
(11) EP 1 173 844 A1

(12)

(43) Date of publication:
23.01.2002 Bulletin 2002/04

(21) Application number: 00919677.5

(22) Date of filing: 24.03.2000
(51) International Patent Classification (IPC)7G11B 7/24, G11B 7/26
(86) International application number:
PCT/US0008/042
(87) International publication number:
WO 0065/586 (02.11.2000 Gazette 2000/44)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 22.04.1999 EP 99107975

(71) Applicant: 3M Innovative Properties Company
Saint Paul, MN 55133-3427 (US)

(72) Inventor:
  • SCHOEPPEL, Wolfgang, G.
    D-Neuss 41470 (DE)

(74) Representative: Wilhelm, Stefan M. 
Office of Intellectual Property Counsel, c/o 3M Deutschland GmbH, Carl-Schurz-Strasse 1
41453 Neuss
41453 Neuss (DE)

   


(54) OPTICAL STORAGE MEDIUM