(19)

(11)

EP 1 716 405 A1

(12)

(43) Date of publication: 02.11.2006 Bulletin 2006/44 (21) Application number: 03780426.7 (22) Date of filing: 16.12.2003

(51) International Patent Classification (IPC):  G01N 21/27(2006.01) G01N 21/59(2006.01) G01N 21/31(2006.01) (86) International application number: PCT/IB2003/005953 (87) International publication number: WO 2005/062023 (07.07.2005 Gazette 2005/27)

(84) Designated Contracting States: NL (71) Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH New Delhi 110 001 (IN)	(72) Inventors: SINGLA, Madan Lal c/o Metallurgy Division 160 030Chandigarh (IN) SINGH, Mewa, c/o Metallurgy Division 160 030Chandigarh (IN) MAHAPATRA, Prasant K., c/o Metallurgy Division 160 030Chandigarh (IN) (74) Representative: van Westenbrugge, Andries  Nederlandsch Octrooibureau Postbus 29720 2502 LS Den Haag 2502 LS Den Haag (NL)