(19)
(11) EP 4 824 211 A1

(12)

(43) Date of publication:
21.10.2026 Bulletin 2026/43

(21) Application number: 24834075.4

(22) Date of filing: 11.12.2024
(51) International Patent Classification (IPC): 
C10M 169/04(2006.01)
 C10N 40/25(2006.01)
(52) Cooperative Patent Classification (CPC):
C10N 2020/02; C10N 2030/02; C10N 2040/25; C10N 2030/52; C10N 2030/76; C10M 2203/1025; C10M 2223/047; C10M 2215/28; C10M 2219/046; C10M 2229/02; C10M 2229/041; C10M 2229/042; C10M 2227/04; C10M 2227/025; C10M 2229/05; C10M 2215/064; C10M 2207/026; C10M 2205/02; C10N 2030/42; C10N 2030/45; C10N 2030/44; C10N 2030/43; C10M 169/045
(86) International application number:
PCT/IB2024/062498
(87) International publication number:
WO 2025/126063 (19.06.2025 Gazette 2025/25)
(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:
GE KH MA MD TN

(30) Priority: 14.12.2023 US 202363609985 P
03.12.2024 US 202418966649

(71) Applicant: Infineum International Limited
Abingdon, Oxfordshire OX13 6BB (GB)

(72) Inventors:
  • FEATHERSTONE, Thomas M.
    Abingdon, Oxfordshire OX13 6BD (GB)
  • MUTTER, Ellis
    Abingdon, Oxfordshire OX13 6BD (GB)
  • CHIRITA, Roxana
    Abingdon, Oxfordshire OX13 6BD (GB)
  • MARSH, Adam P.
    Abingdon, Oxfordshire OX13 6BD (GB)
  • DRIVER, Mark P.
    Abingdon, Oxfordshire OX13 6BD (GB)
  • RITCHIE, Andrew J.D.
    Linden, New Jersey 07036 (US)

(74) Representative: Hart, Richard Joseph 
Infineum UK Ltd. Milton Hill Business & Technology Centre Milton Hill
Abingdon, Oxfordshire OX13 6BD
Abingdon, Oxfordshire OX13 6BD (GB)

   


(54) LUBRICANT COMPOSITIONS CONTAINING SILICON FOR REDUCED PRE-IGNITION IN HYDROGEN FUELED ENGINES