(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