Patents by Inventor Robert L. Ornstern

Robert L. Ornstern 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).

  • Cool melt glue
    Patent number: 5373049
    Abstract: Hot-melt adhesives, useful for both glue-pot and glue-gun applications, are formulated so that they can be applied at temperatures no higher than 280.degree. F. and preferably at temperatures of at most 250.degree. F. The adhesive compositions have a heat resistance of at least 125.degree. F. and are readily shaped into glue sticks for use in glue guns, The adhesive for the hot-melt adhesive compositions is suitably compounded with tackifying resin and/or wax. The resulting composition has a sharp viscosity profile, which is readily achieved, e.g., by using a high melt index adhesive polymer as an essential component.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: December 13, 1994
    Assignee: Adhesive Technologies
    Inventors: Robert L. Ornstern, Peter S. Melendy, Dennis J. Fitzmeyer