(19)
(11) EP 1 456 697 A1

(12)

(43) Date of publication:
15.09.2004 Bulletin 2004/38

(21) Application number: 02792499.2

(22) Date of filing: 19.12.2002
(51) International Patent Classification (IPC)7G02B 6/16, C03C 25/62
(86) International application number:
PCT/US2002/040962
(87) International publication number:
WO 2003/054602 (03.07.2003 Gazette 2003/27)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR
Designated Extension States:
AL LT LV MK RO

(30) Priority: 20.12.2001 US 28838
18.12.2002 US 323954

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

(72) Inventors:
  • VISWANATHAN, Nirmal K.,
    Austin, TX 78726-9000 (US)
  • PAOLUCCI, Dora M.,
    Austin, TX 78726-9000 (US)
  • CARPENTER, James B.,
    Austin, TX 78726-9000 (US)

(74) Representative: VOSSIUS & PARTNER 
Siebertstrasse 4
81675 München
81675 München (DE)

   


(54) SECTIONALLY PHOTOSENSITIVE OPTICAL WAVEGUIDES