MUMBAI, India, April 20 -- Intellectual Property India has published a patent application (202514070632 A) filed by Fulian Yuzhan Precision Technology Co. Ltd., Shenzhen, China, on July 24, 2025, for 'composite oxide film and preparation method of the same.'
Inventor(s) include Chuhui Wu; Boling Xu; Chung-Pei Wang; Shihui Qin; and Wen-Han Tsai.
The application for the patent was published on April 17, under issue no. 16/2026.
According to the abstract released by the Intellectual Property India: "The present application provides a composite oxide film and a preparation method of a composite oxide film. The preparation method includes the steps of performing an anodizing treatment on a surface of a metal workpiece to form an oxide layer, and then depositing a modified organic silicon polymer on the oxide layer by cathode electrophoretic painting to form a deposition layer, thereby obtaining a composite oxide film. The modified organic silicon polymer comprises positively charged modified epoxy resin units and negatively charged hydrophobic fluorine-containing groups. The composite oxide film and preparation method thereof provided in the present application improves the performance and the service life of the oxide layer by depositing a deposition layer with strong adhesion and hydrophobic properties on the surface of the oxide layer."
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