(19)

(11)

EP 2 539 141 A1

(12)

(43) Date of publication: 02.01.2013 Bulletin 2013/01 (21) Application number: 11710353.1 (22) Date of filing: 17.02.2011

(51) International Patent Classification (IPC):  B30B 11/00(2006.01) C04B 35/486(2006.01) B28B 3/00(2006.01) C03B 17/06(2006.01) B29C 43/10(2006.01) (86) International application number: PCT/US2011/025136 (87) International publication number: WO 2011/106221 (01.09.2011 Gazette 2011/35)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 24.02.2010 US 307657 P (71) Applicant: Corning Incorporated Corning, New York 14831 (US)	(72) Inventors: RHOADS, Randy L. Horseheads New York 14845 (US) SCHERMERHORN, Paul M. Painted Post New York 14870 (US) (74) Representative: Zijlstra, Robert Wiebo Johan  Elkington and Fife LLP Prospect House 8 Pembroke Road Sevenoaks, Kent TN13 1XR Sevenoaks, Kent TN13 1XR (GB)