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EP 2 313 537 A1

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(43) Date of publication: 27.04.2011 Bulletin 2011/17 (21) Application number: 08806865.5 (22) Date of filing: 30.07.2008

(51) International Patent Classification (IPC):  C22C 38/34(2006.01) C22C 38/46(2006.01) C22C 38/44(2006.01) C22C 38/58(2006.01) (86) International application number: PCT/IB2008/001988 (87) International publication number: WO 2010/013083 (04.02.2010 Gazette 2010/05)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (71) Applicant: Lepl-Ferdinand Tavadze Institute Of Metallurgy And Materials Science Tbilisi 0160 (GE)

(72) Inventors: KOBULASHVILI, Givi Tbilisi 0112 (GE) OAKLEY, Anatol Tbilisi 0131 (GE) RATISHVILI, Merab Tbilisi 0108 (GE) SAMOILENKO, Victor Kiev 04119 (UA) SKIBINA, Lyudmila Kharkov 310024 (UA) CHIPASHVILI, David Tbilisi 0162 (GE) EBANOIDZE, David Tbilisi 0177 (GE) YUSHENKO, Konstantin Kiev 03113 (UA) (74) Representative: Ocvirk, Philippe  Office Ernest T. Freylinger S.A. P.O. Box 48 8001 Strassen 8001 Strassen (LU)