Trade Mark Journal No.2026/042 16 October 2026

WO0000001939673 (1)

Office of origin: United States of America

Date of International Registration:2 June 2026
Date of designation in the UK: 2 June 2026
Image for mark 1939673 STACKPLANE

International priority date claimed: 27 May 2026 (United States of America) (99848613)
Class 1
Chemicals for use in the manufacture of semiconductors; chemical preparations for use in industry; chemicals for use in the electronics industry; chemicals for use in the semiconductor industry.

DuPont Electronic Materials Holding, Inc.

Representative: Jeffrey M. Connor, 974 Centre Road,, Building 735, Wilmington DE 19805, UNITED STATES OF AMERICA