(19)
(11) EP 1 490 662 A1

(12)

(43) Date of publication:
29.12.2004 Bulletin 2004/53

(21) Application number: 02717027.3

(22) Date of filing: 28.03.2002
(51) International Patent Classification (IPC)7G01L 9/12, C04B 35/497
(86) International application number:
PCT/IN2002/000078
(87) International publication number:
WO 2003/083428 (09.10.2003 Gazette 2003/41)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(71) Applicants:
  • Council of Scientific andIndustrial Research
    New Delhi 110 001 (IN)
  • Indian Institute of Technology
    110016 New Delhi (IN)

(72) Inventors:
  • JAIN, Kamlesh Kumar,National Physical Laboratory
    New Delhi 110 012 (IN)
  • KUMAR, Vijay,National Physical Laboratory
    New Delhi 110 012 (IN)
  • KASHYAP, Subhash Chand,Indian Institute of Tech.
    New Delhi 110 016 (IN)

(74) Representative: Fairbairn, Angus Chisholm et al
Marks & Clerk,57-60 Lincoln's Inn Fields
London WC2A 3LS
London WC2A 3LS (GB)

   


(54) LEAD IRON TUNGSTATE CAPACITIVE TRANSDUCER, RELAXOR MATERIAL THEREFOR, METHOD OF MANUFACTURE OF RELAXOR MATERIAL