(19)
(11) EP 0 020 730 A1

(12)

(43) Date of publication:
07.01.1981 Bulletin 1981/01

(21) Application number: 80900143.0

(22) Date of filing: 26.11.1979
(51) International Patent Classification (IPC): 
G01N 25/ 18( . )
G01N 33/ 38( . )
(86) International application number:
PCT/US1979/001052
(87) International publication number:
WO 1980/001414 (10.07.1980 Gazette 1980/15)
(84) Designated Contracting States:
CH DE FR GB SE

(30) Priority: 29.12.1978 US 19780974649

(71) Applicant: CERES CORPORATION
Waltham, MA 02154 (US)

(72) Inventors:
  • MOXON, Edwin C.
    Boxboro, MA 01719 (US)
  • MENASHI, Wilson P.
    Lexington, MA 02173 (US)

(74) Representative: Slight, Geoffrey Charles 
Graham Watt & Co. Riverhead
Sevenoaks Kent TN13 2BN
Sevenoaks Kent TN13 2BN (GB)

   


(54) METHOD AND DEVICE FOR DISTINGUISHING MATERIALS BY THERMAL CONDUCTIVITY