Patents by Inventor Duane A. Fultz

Duane A. Fultz 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).

  • Panel and method for the preparation thereof
    Patent number: 4311541
    Abstract: Composite foam panels are prepared from expanded thermoplastic particles of low density by generally encapsulating the particles in a phenolic foam matrix and providing a particulate expanded mineral substance such as perlite disposed generally adjacent the major surfaces of the panel.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: January 19, 1982
    Assignee: The Dow Chemical Co.
    Inventor: Duane A. Fultz
  • Panel and method for the preparation thereof
    Patent number: 4233361
    Abstract: Composite foam panels are prepared from expanded thermoplastic particles of low density by generally encapsulating the particles in a phenolic foam matrix and providing a particulate expanded mineral substance such as perlite disposed generally adjacent the major surfaces of the panel.
    Type: Grant
    Filed: July 27, 1978
    Date of Patent: November 11, 1980
    Assignee: The Dow Chemical Company
    Inventor: Duane A. Fultz