(19)
(11) EP 1 856 692 A2

(12)

(43) Date of publication:
21.11.2007 Bulletin 2007/47

(21) Application number: 06720028.7

(22) Date of filing: 01.02.2006
(51) International Patent Classification (IPC): 
G11B 7/00(2006.01)
(86) International application number:
PCT/US2006/003470
(87) International publication number:
WO 2006/083911 (10.08.2006 Gazette 2006/32)
(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 LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK YU

(30) Priority: 01.02.2005 US 649070 P
30.12.2005 US 755177 P

(71) Applicant: Purdue Research Foundation
West Lafayette, IN 47906 (US)

(72) Inventors:
  • NOLTE, David
    Lafayette, IN 47905 (US)
  • PENG, Leilei
    West Lafayette, IN 47906 (US)
  • REGNIER, Fred, E.
    West Lafayette, IN 47906 (US)
  • ZHAO, Ming
    West Lafayette, IN 46096 (US)

(74) Representative: Holmes, Matthew Peter et al
MARKS & CLERK, Sussex House, 83-85 Mosley Street
Manchester M2 3LG
Manchester M2 3LG (GB)

   


(54) METHOD AND APPARATUS FOR PHASE CONTRAST QUADRATURE INTERFEROMETRIC DETECTION OF AN IMMUNOASSAY