(19)
(11) EP 4 476 307 A1

(12)

(43) Date of publication:
18.12.2024 Bulletin 2024/51

(21) Application number: 23702997.0

(22) Date of filing: 31.01.2023
(51) International Patent Classification (IPC): 
C10M 177/00(2006.01)
F01M 9/02(2006.01)
(52) Cooperative Patent Classification (CPC):
F01M 9/02; C10M 177/00
(86) International application number:
PCT/EP2023/052249
(87) International publication number:
WO 2023/148142 (10.08.2023 Gazette 2023/32)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
KH MA MD TN

(30) Priority: 07.02.2022 US 202263307317 P

(71) Applicant: Shell Internationale Research Maatschappij B.V.
2596 HR The Hague (NL)

(72) Inventors:
  • ONDARZA, Frederick John
    Houston, Texas 77082-3101 (US)
  • SONG, Wensi
    Houston, Texas 77082 (US)
  • CROM, Lori Ann
    Houston, Texas 77082-3101 (US)

(74) Representative: Shell Legal Services IP 
PO Box 384
2501 CJ The Hague
2501 CJ The Hague (NL)

   


(54) METHOD FOR EXTENDING LUBRICANT LIFE