Patents by Inventor Richard C. Oldack

Richard C. Oldack 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).

  • Pressure sensitive adhesive for decorative films with removable and repositionable properties
    Patent number: 6194064
    Abstract: The present invention is a pressure sensitive adhesive for use on a wallcovering to cover a surface such that the wallcovering is repositionable and removable without damage to the surface. The pressure sensitive adhesive is made by combining a plurality of water based acrylic emulsions and a plurality of hollow glass bubbles having a density and size to be present at the surface of the pressure sensitive adhesive and reduce initial tack to allow movement of the wallcovering on the wall surface. The hollow glass bubbles halve a density within the range of 0.05 to 0.10 g/cc and a size within the range 40 to 177 microns in diameter. Additives can be added to the pressure sensitive adhesive of the present invention such as surfactants, defoamers, thickeners, and tacking resins. The pressure sensitive adhesive is applied to a wallcovering and dried to evaporate the water content.
    Type: Grant
    Filed: December 3, 1997
    Date of Patent: February 27, 2001
    Assignee: Dyna-Tech Adhesive, Inc.
    Inventors: David R. Keely, Richard C. Oldack
  • Method for reducing the mechanical stability of natural rubber latex
    Patent number: 4379095
    Abstract: A method is provided for the mechanical destabilization of natural rubber latex by the addition of a nonionic polyol block copolymer surfactant. Reducing the mechanical stability allows the natural rubber latex composition to form better quick-break adhesives.
    Type: Grant
    Filed: February 17, 1982
    Date of Patent: April 5, 1983
    Assignee: The Firestone Tire & Rubber Company
    Inventor: Richard C. Oldack