Patents by Inventor William George Ruth

William George Ruth 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).

  • Thermosetting epoxy powder coatings having improved degassing properties
    Patent number: 6592994
    Abstract: A clear coat dicyandiamide cured epoxy powder coating for non-metallic substrates wherein the finish coat is visually haze-free as a result of the addition of a small amount of an aromatic substituted urea compound. Non-metallic substrates, such as brass, cannot withstand extremely high temperatures which are required to cure well known powder coatings. However, coating systems which cure at lower temperatures often produce a haze within the finish clear coat. The present invention alleviates this problem.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: July 15, 2003
    Assignee: Rohm and Haas Company
    Inventors: Tabitha Lynn McLeish, William George Ruth
  • Thermosetting epoxy powder coatings having improved degassing properties
    Publication number: 20020082321
    Abstract: A clear coat dicyandiamide cured epoxy powder coating for non-metallic substrates wherein the finish coat is visually haze-free as a result of the addition of a small amount of an aromatic substituted urea compound. Non-metallic substrates, such as brass, cannot withstand extremely high temperatures which are required to cure well known powder coatings. However, coating systems which cure at lower temperatures often produce a haze within the finish clear coat. The present invention alleviates this problem.
    Type: Application
    Filed: October 26, 2001
    Publication date: June 27, 2002
    Inventors: Tabitha Lynn McLeish, William George Ruth