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(11)

EP 2 489 070 A1

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(43) Date of publication: 22.08.2012 Bulletin 2012/34 (21) Application number: 10834903.6 (22) Date of filing: 14.10.2010

(51) International Patent Classification (IPC):  H01L 23/29(2006.01) (86) International application number: PCT/US2010/052726 (87) International publication number: WO 2011/068597 (09.06.2011 Gazette 2011/23)

(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: 14.10.2009 US 251527 P 19.03.2010 US 679250 (71) Applicant: Adco Products, Inc. Michingan Center, MI 49254 (US)	(72) Inventors: BECKER, Harald 67705 Stelzenberg (DE) BRÜCHER, Heike 66887 Rathsweller (DE) SCHOTT, Norbert 66482 Zweibrücken (DE) RASAL, Rahul South Lyon MI 48178 (US) (74) Representative: Fries, Oliver  Manitz, Finsterwald & Partner GbR Martin-Greif-Strasse 1 80336 München 80336 München (DE)