Patents by Inventor Martha L. Westcott

Martha L. Westcott 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).

  • Reduced build-up pressure-sensitive adhesives
    Patent number: 4548845
    Abstract: A water-insoluble, normally tacky, pressure-sensitive adhesive is disclosed having reduced build up on a knife blade when that knife blade is utilized to shear a plurality of webs including a layer of the adhesive. The adhesive contains a mixture of non-volatile components including (a) a water-insoluble elastomeric polymer, (b) a tackifier and (c) a polyoxyalkylene polyol present in amount of about 3 to about 45 percent of the total non-volatile weights of components (a), (b) and (c). The adhesive components (a), (b) and (c) are dispersed substantially homogeneously when the adhesive is applied to a substrate.
    Type: Grant
    Filed: April 21, 1983
    Date of Patent: October 22, 1985
    Assignee: Avery International Corp.
    Inventors: Robert E. Parsons, Martha L. Westcott, Susan L. Johnson