Patents by Inventor Sandra Drahos

Sandra Drahos 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).

  • Method of manufacturing an upper for a shoe
    Patent number: 5922831
    Abstract: A polyamide resin comprising the reaction product obtained by the reaction of an acid component comprised of a major concentration of a dimer acid and minor concentration of a monobasic acid and an amine component comprised of a major concentration of a short-chain alkylenediamine, a first minor concentration of a medium-chain alkylenediamine and second minor concentration of a polyoxyalkylene diamine having a molecular weight greater than about 500 is provided. The polyamide resin is used to form a blend of containing the polyamide in a major amount by weight and a first minor amount by weight of a polar wax and a second minor amount by weight of a polyolefin elastomer. The composition is used to reinforce a footwear upper, e.g. as a print on box toe material.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: July 13, 1999
    Inventors: Dwight D. Heinrich, Reimar Heucher, Sandra Drahos
  • Polyamide compositions and related methods
    Patent number: 5807968
    Abstract: A polyamide resin comprising the reaction product obtained by the reaction of an acid component comprised of a major concentration of a dimer acid and minor concentration of a monobasic acid and an amine component comprised of a major concentration of a short-chain alkylenediamine, a first minor concentration of a medium-chain alkylenediamine and second minor concentration of a polyoxyalkylene diamine having a molecular weight greater than about 500 is provided. The polyamide resin is used to form a blend of containing the polyamide in a major amount by weight and a first minor amount by weight of a polar wax and a second minor amount by weight of a polyolefin elastomer. The composition is used to reinforce a footwear upper, e.g. as a print on box toe material.
    Type: Grant
    Filed: April 4, 1996
    Date of Patent: September 15, 1998
    Assignee: Henkel Corporation
    Inventors: Dwight D. Heinrich, Reimar Heucher, Sandra Drahos