(19)
(11) EP 0 020 458 A1

(12)

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

(21) Application number: 79901264.0

(22) Date of filing: 12.09.1979
(51) International Patent Classification (IPC): 
C10M 101/ 00( . )
C09K 5/ 08( . )
H01B 3/ 22( . )
C09K 5/ 00( . )
H01B 3/ 20( . )
H01F 27/ 12( . )
(86) International application number:
PCT/US1979/000733
(87) International publication number:
WO 1980/000894 (01.05.1980 Gazette 1980/10)
(84) Designated Contracting States:
DE FR GB NL

(30) Priority: 26.10.1978 US 19780954923
26.10.1978 US 19780954924

(71) Applicant: GULF RESEARCH & DEVELOPMENT COMPANY
Pittsburgh Pennsylvania 15230 (US)

(72) Inventor:
  • PELLEGRINI, John P.
    Pittsburgh, PA 15238 (US)

(74) Representative: Huskisson, Frank Mackie 
FITZPATRICKS 4 West Regent Street
Glasgow G2 1RS Scotland
Glasgow G2 1RS Scotland (GB)

   


(54) INSULATION OF ELECTRICAL APPARATUS WITH A SYNTHETIC TRANSFORMER OIL