Patents by Inventor Ralph S. Drake

Ralph S. Drake 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).

  • Polyurethane pressure-sensitive adhesive and laminates therefrom
    Patent number: 4145514
    Abstract: A pressure-sensitive adhesive comprises the reaction product of (A) at least one alkyl acrylate liquid polymer containing both terminal and random hydroxyl functionality, and (B) at least one prepolymer of a polyester glycol or a polyalkylene ether glycol with an excess amount of an aromatic diisocyanate. The adhesive has a full range of desirable adhesive properties, including excellent rolling ball tack, 180.degree. peel adhesion and shear adhesion. The adhesive is useful in both solvent and solvent-free systems.
    Type: Grant
    Filed: September 1, 1977
    Date of Patent: March 20, 1979
    Assignee: The B. F. Goodrich Company
    Inventors: William E. deVry, Ralph S. Drake, Richard T. Morrissey