Patents by Inventor Vir B. Singh

Vir B. Singh 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 treating leather
    Patent number: 4875900
    Abstract: The invention relates to a method for treatment of leather for improving the chrome exhaustion and various other properties. The method consists in treating the leather with a dispersion microcrystalline polyamide or polyester. Such a treatment is carried out at the stage of tanning, rechroming, retanning or dyeing.
    Type: Grant
    Filed: September 22, 1987
    Date of Patent: October 24, 1989
    Inventors: Vir B. Singh, Kanniah N. G. K. Moorthy, Pushpendar K. Kaushik, Hariharan Sankarasub-Ramanian
  • Films from compositions of polyesters and olefine polymers
    Patent number: 4368295
    Abstract: An opaque or translucent molecularly oriented film made from a composition comprising at least one linear polyester (preferably polyethylene terephthalate) and 0.5-100% by weight based on polyester of at least one olefine polymer, wherein said composition contains at least one carboxylated polyolefine in an amount of 0.05-50% by weight based on olefine polymer. The composition used for the film is preferably formed by precompounding the olefine polymer and carboxylated olefine and then mixing with the polyester.
    Type: Grant
    Filed: June 22, 1981
    Date of Patent: January 11, 1983
    Assignee: Imperial Chemical Industries Limited
    Inventors: Alan B. Newton, Eric Nield, Vir B. Singh