Patents by Inventor Eugene S. STIVENDER

Eugene S. STIVENDER 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).

  • Light weight gypsum fiber panel suitable for use as roof cover board
    Patent number: 9950957
    Abstract: A roof cover board made from a mixture of 30-60% stucco; 20-50% perlite; 10-30% cellulose fiber; 3-20% starch; and siloxane. Also disclosed is a stucco-free roof cover board made from a mixture of 30-60% perlite, 30-60% cellulose fiber, 5-25% starch; and siloxane. Also disclosed are methods for making same.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: April 24, 2018
    Assignee: UNITED STATES GYPSUM COMPANY
    Inventors: Yufeng Xu, Eugene S. Stivender
  • Light Weight Gypsum Fiber Panel Suitable for Use as Roof Cover Board
    Publication number: 20170107152
    Abstract: A roof cover board made from a mixture of 30-60% stucco; 20-50% perlite; 10-30% cellulose fiber; 3-20% starch; and siloxane. Also disclosed is a stucco-free roof cover board made from a mixture of 30-60% perlite, 30-60% cellulose fiber, 5-25% starch; and siloxane. Also disclosed are methods for making same.
    Type: Application
    Filed: March 31, 2016
    Publication date: April 20, 2017
    Inventors: Yufeng Xu, Eugene S. STIVENDER