(19)
(11) EP 2 207 868 A1

(12)

(43) Date of publication:
21.07.2010 Bulletin 2010/29

(21) Application number: 08799372.1

(22) Date of filing: 10.09.2008
(51) International Patent Classification (IPC): 
C10M 169/00(2006.01)
(86) International application number:
PCT/US2008/075758
(87) International publication number:
WO 2009/042396 (02.04.2009 Gazette 2009/14)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 27.09.2007 US 975720 P
31.10.2007 US 930685

(71) Applicant: Chevron U.S.A., Inc.
San Ramon, CA 94583 (US)

(72) Inventors:
  • ZAKARIAN, John A.
    Hercules, CA 94547 (US)
  • TIRONA, Angelito
    Daly City, CA 94014 (US)

(74) Representative: Nash, David Allan 
Haseltine Lake LLP Redcliff Quay 120 Redcliff Street
Bristol BS1 6HU
Bristol BS1 6HU (GB)

   


(54) TRACTOR HYDRAULIC FLUID COMPOSITIONS AND PREPARATION THEREOF