Patents by Inventor Dong Myung Chay

Dong Myung Chay 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).

  • Foaming agents for galvanizing fluxes
    Patent number: 4042731
    Abstract: A process which involves galvanizing with a galvanizing flux consisting essentially of a fluxing material selected from zinc ammonium chloride double salt and a mixture of zinc chloride and ammonium chloride and, as a foaming agent, sorbitol by dipping a metal article into a molten bath of zinc covered by said flux.
    Type: Grant
    Filed: November 6, 1975
    Date of Patent: August 16, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Dong Myung Chay