Patents by Inventor John Thanh Ngoc Nguyen

John Thanh Ngoc Nguyen 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).

  • Methods and compositions for coating aluminum substrates
    Patent number: 8691346
    Abstract: The present invention relates to methods and compositions for coating aluminum substrates. In an embodiment, the invention includes a method of applying a coating on an aluminum substrate including contacting the aluminum substrate with a first solution. The first solution can include a zinc metal salt, a sugar acid or alkali metal salt thereof, and an alkali metal hydroxide. The method can also include contacting the aluminum substrate with a second solution. The second solution can include a molybdate salt, an alkanolamine, and a fluorine acid. Other embodiments are also included herein.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: April 8, 2014
    Assignee: Birchwood Laboratories, Inc.
    Inventors: William V. Block, David J. Halverson, John Thanh Ngoc Nguyen
  • METHODS AND COMPOSITIONS FOR COATING ALUMINUM SUBSTRATES
    Publication number: 20090280258
    Abstract: The present invention relates to methods and compositions for coating aluminum substrates. In an embodiment, the invention includes a method of applying a coating on an aluminum substrate including contacting the aluminum substrate with a first solution. The first solution can include a zinc metal salt, a sugar acid or alkali metal salt thereof, and an alkali metal hydroxide. The method can also include contacting the aluminum substrate with a second solution. The second solution can include a molybdate salt, an alkanolamine, and a fluorine acid. Other embodiments are also included herein.
    Type: Application
    Filed: May 6, 2009
    Publication date: November 12, 2009
    Inventors: William V. Block, David J. Halverson, John Thanh Ngoc Nguyen