Patents by Inventor Thomas W. Allen

Thomas W. Allen 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).

  • Method for producing glass mat using glass having a relatively high alkali content
    Patent number: 4790906
    Abstract: According to this invention there is provided a method for producing glass mat using glass having a relatively high alkali content which comprises chopping the glass fibers while wet and thereafter freezing the wet fiber glass in order to prevent leaching of the alkali constituents. The frozen glass fiber can then be crushed and used to prepare a glass fiber mat in a wet process.
    Type: Grant
    Filed: November 13, 1987
    Date of Patent: December 13, 1988
    Assignee: Owens-Corning Fiberglas Corporation
    Inventors: Fred S. Coffey, Thomas W. Allen, James E. Wille