GERMANIUM-FREE SILICATE WAVEGUIDE COMPOSITIONS FOR ENHANCED L-BAND AND S-BAND EMISSION AND METHOD FOR ITS MANUFACTURE - Patent 1461295

(19)

(11)

EP 1 461 295 A2

(12)

(88)	Date of publication A3:
	02.10.2003

(43)	Date of publication:
	29.09.2004 Bulletin 2004/40

(21)	Application number: 02806137.2

(22)	Date of filing: 03.12.2002

(51)	International Patent Classification (IPC)⁷: C03C 13/04

(86)	International application number:
	PCT/US2002/038303

(87)	International publication number:
	WO 2003/057643 (17.07.2003 Gazette 2003/29)

(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:

31.12.2001 US 345076 P
19.11.2002 US 299224
19.11.2002 US 299654

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

(72)	Inventors:
	ANDERSON, Mark, T.3M Center Saint Paul, MN 55133-3427 (US) SCHARDT, Craig, R.3M Center Saint Paul, MN 55133-3427 (US) ONSTOTT, James, R.3M Center Saint Paul, MN 55133-3427 (US) BUDD, Kenton, D.3M Center Saint Paul, MN 55133-3427 (US)

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

(54)	GERMANIUM-FREE SILICATE WAVEGUIDE COMPOSITIONS FOR ENHANCED L-BAND AND S-BAND EMISSION AND METHOD FOR ITS MANUFACTURE