Patents Assigned to Ridge Scientific Enterprises, Inc.
  • Adhesive compositions including polyvinylpyrrolidone acrylic acid polymers, and polyamines
    Patent number: 5645855
    Abstract: A composition comprising a cross-linked salt of (a) a polyvinylpyrrolidone having ring opened pyrrolidone groups; (b) at least one acrylic acid-containing or methacrylic acid-containing polymer; and (c) an amine-containing polymer. The composition may be used as a pressure-sensitive adhesive, has good tack, and may be peeled from the body or from an object without causing damage or injury to the body or object.
    Type: Grant
    Filed: March 13, 1996
    Date of Patent: July 8, 1997
    Assignee: Ridge Scientific Enterprises, Inc.
    Inventor: Donald H. Lorenz