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(11)

EP 2 969 997 A1

(12)

(43) Date of publication: 20.01.2016 Bulletin 2016/03 (21) Application number: 14728700.7 (22) Date of filing: 13.03.2014

(51) International Patent Classification (IPC):  C03C 27/10(2006.01) C03C 27/12(2006.01) C03C 17/32(2006.01) B32B 17/06(2006.01) C03C 17/30(2006.01) (86) International application number: PCT/US2014/025537 (87) International publication number: WO 2014/151353 (25.09.2014 Gazette 2014/39)

(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 Designated Extension States: BA ME (30) Priority: 15.03.2013 US 201361791418 P 07.10.2013 US 201314047251 (71) Applicant: Corning Incorporated Corning, New York 14831 (US)

(72) Inventors: BELLMAN, Robert Alan Painted Post, New York 14870 (US) BOOKBINDER, Dana Craig Corning, New York 14830 (US) MANLEY, Robert George Vestal, New York 13850 (US) MAZUMDER, Prantik Ithaca, New York 14850 (US) STEPHEN II ,Alan, Thomas Beaver Dams , New York 14812 (US) DOMEY, Jeffrey, john Elmira, New york 14903 (US) CHANG, Theresa Painted Post, New York 14870 (US) (74) Representative: Scheuermann, Erik  Elkington and Fife LLP Prospect House 8 Pembroke Road Sevenoaks, Kent TN13 1XR Sevenoaks, Kent TN13 1XR (GB)