Patents by Inventor Richard Hon Wai Au

Richard Hon Wai Au has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method For Producing White Anodized Aluminum Oxide
    Publication number: 20140209467
    Abstract: A method for forming substantially white anodized aluminum oxide on an aluminum or aluminum alloy substrate is provided. A porous aluminum oxide layer is formed on the aluminum or aluminum alloy substrate by anodization in an acid electrolyte. Following formation of the anodized porous layer of aluminum oxide, the aluminum/aluminum alloy substrate is sequentially immersed in at least two reaction material solutions. The two or more reaction materials react to deposit a substantially white pigment material in the pores of the anodized aluminum oxide.
    Type: Application
    Filed: August 3, 2011
    Publication date: July 31, 2014
    Applicant: NANO AND ADVANCED MATERIALS INSTITUTE LIMITED
    Inventors: Jianying Miao, Un Teng Lam, Richard Hon Wai Au, Ying Liang, Man Ho Yim