(19)

(11)

EP 1 769 218 A1

(12)

(43) Date of publication: 04.04.2007 Bulletin 2007/14 (21) Application number: 05762280.5 (22) Date of filing: 30.06.2005

(51) International Patent Classification (IPC):  G01B 11/24(2006.01) C03B 23/025(2006.01) (86) International application number: PCT/FI2005/050261 (87) International publication number: WO 2006/005805 (19.01.2006 Gazette 2006/03)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (30) Priority: 14.07.2004 FI 20045273 (71) Applicant: Tamglass Ltd. Oy 33730 Tampere (FI)	(72) Inventor: JANHUNEN, Toivo FI-36200 Kangasala (FI) (74) Representative: LEITZINGER OY  Tammasaarenkatu 1 00180 Helsinki 00180 Helsinki (FI)