Patents by Inventor Laury Pensa

Laury Pensa 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).

  • Patent number: 4783193
    Abstract: The present invention provides a process that utilizes synergistic chemical systems for decolorizing synthetic polymer materials, such as polyester, in a variety of shapes including fibers, yarns, fabrics, sheets and films. These chemical systems are unstable dispersions of alkyl halides and aqueous solutions of bleaching/oxidizing agents, such as the alkali metal salts of hypohalites, to which specified quantities of organic or inorganic acids and of surfactant/wetting agents are added. The polymeric materials are exposed to the activated chemical systems in appropriate reaction vessels. The stripping process is rapid and the resulting products are completely color-free. Further, the alkyl halide and bleaching/oxidizing components of the chemical systems can be reclaimed after the decolorizing process for recycling.
    Type: Grant
    Filed: November 3, 1986
    Date of Patent: November 8, 1988
    Inventor: Laury Pensa