Patents by Inventor Philip J. Halpin

Philip J. Halpin 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).

  • Binder for improved glass fiber mats
    Patent number: 4917764
    Abstract: A glass fiber mat having improved strength and fiber wettability is provided by incorporation of a critical amount of between 1% and 6% by weight (solids) of a carboxylated styrene-butadiene latex having a pH between about 5 and about 8.5, a glass transition temperature (Tg) less than 25.degree. C. and a surface tension less than 50 dynes/cm, and 94% and 99% by weight (solids) of a urea-formaldehyde resin solution having a pH of from about 6.5 to about 8.5.
    Type: Grant
    Filed: December 12, 1988
    Date of Patent: April 17, 1990
    Assignee: GAF Building Materials Corporation
    Inventors: Steven S. Lalwani, Philip J. Halpin