WO2026133252 - MODIFIED STYRENE-MALEIC ANHYDRIDE CO-POLYMER COMPOSITION AND THEIR USE AS LUBRICANT ADDITIVES

National phase entry is expected:
Publication Number WO/2026/133252
Publication Date 25.06.2026
International Application No. PCT/IB2025/063183
International Filing Date 18.12.2025
Title **
[English] MODIFIED STYRENE-MALEIC ANHYDRIDE CO-POLYMER COMPOSITION AND THEIR USE AS LUBRICANT ADDITIVES
[French] COMPOSITION DE COPOLYMÈRE DE STYRÈNE-ANHYDRIDE MALÉIQUE MODIFIÉ ET SON UTILISATION EN TANT QU'ADDITIFS LUBRIFIANTS
Applicants **
CASTROL LIMITED
Inventors
SAUER, Richard
RONZITTI, Francesca
Priority Data
24221154.8   18.12.2024   EP
Application details
Total Number of Claims/PCT *
Number of Independent Claims *
Number of Priorities *
Number of Multi-Dependent Claims *
Number of Drawings *
Pages for Publication *
Number of Pages with Drawings *
Pages of Specification *
*
Number of Office Actions *
*
International Searching Authority
*
Recordal of a Change of the Applicant's Name/Address
*
Type of Assignment
*
Applicant's Legal Status
*
*
*
*
*
*
Entry into National Phase under
*
Patent Delivery
*
Translation

* The data is based on automatic recognition. Please verify and amend if necessary.

** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.

Quotation for National Phase entry

Country StagesTotal
China Filing, Examination, Granting2123
EPO Filing, Examination, Granting9022
Japan Filing, Examination, Granting2218
South Korea Filing, Examination, Granting2197
USA Filing, Examination, Granting6540
MasterCard Visa
Total: 22,100
Contact Us
Abstract[English] hydrocarbyl primary amine residues and polyethyleneimine oligomer residues is at least 80 wt% of the polymer composition.[French] )amine primaire et de résidus d'oligomère de polyéthylèneimine étant supérieure ou égale à 80 % en poids de la composition polymère.