Patents by Inventor Chyang J. Wu

Chyang J. Wu 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).

  • Electrocoating chrome-plated steel
    Patent number: 7291252
    Abstract: Steel cabinet parts and other steel objects are electrocoated in a cationic resin-containing bath. The steel objects are chromium-coated, free of phosphate and preferably free of chromium oxide. The products are not significantly subject to filiform corrosion, and the process is economically beneficial because throwpower is more easily controlled than in previous processes.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: November 6, 2007
    Assignee: United States Steel Corporation
    Inventors: Jian X. Li, Daniel E. Bullard, Chyang J. Wu
  • Electrocoating chrome-plated steel
    Publication number: 20030111350
    Abstract: Steel cabinet parts and other steel objects are electrocoated in a cationic resin-containing bath. The steel objects are chromium-coated, free of phosphate and preferably free of chromium oxide. The products are not significantly subject to filiform corrosion, and the process is economically beneficial because throwpower is more easily controlled than in previous processes.
    Type: Application
    Filed: November 25, 2002
    Publication date: June 19, 2003
    Applicant: United States Steel Corporation
    Inventors: Jian X. Li, Daniel E. Bullard, Chyang J. Wu
  • Minimization of mounds in iron-zinc electrogalvanized sheet
    Patent number: 5316653
    Abstract: A process and electrolyte for forming mound-free coatings of zinc-iron alloy on metal, e.g. steel, sheet and strip comprises passing the article to be plated through an electrolyte bath containing chlorides of iron and zinc and from about 2 to about 6 g/l, and particularly about 2.5 to about 3.5 g/l, of citric acid.
    Type: Grant
    Filed: July 30, 1992
    Date of Patent: May 31, 1994
    Assignee: USX Corporation
    Inventors: Chyang J. Wu, Jack E. Manack