Patents by Inventor Patricia A. McHenry

Patricia A. McHenry 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).

  • Fibrous insulation mat with anti-punking binder system
    Patent number: 4294879
    Abstract: The present invention comprises a low-cost, convenient to use anti-punking binder system for use in bonding entangled masses of mineral fibers such as glass. The binder system comprises a phenolic-formaldehyde resin mixed with a water soluble urea-formaldehyde resin; the urea-formaldehyde resin content in the binder system comprising an amount of about 5 to 50% by weight of the binder solids content. The urea-formaldehyde resin comprises about 59% urea, about 19% formaldehyde and about 22% water by weight. Silane, ammonia and ammonium sulfate may also be added.
    Type: Grant
    Filed: December 4, 1980
    Date of Patent: October 13, 1981
    Assignee: Johns-Manville Corporation
    Inventor: Patricia A. McHenry