Patents by Inventor Qamardin Farishta

Qamardin Farishta 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 to impart coffee stain resistance to polyamide textile substrates
    Patent number: 5364541
    Abstract: The present invention provides methods and compositions to impart coffee stain resistance to polyamide textile substrates such as carpets. The compositions comprise either (i) a copolymer selected from the group consisting of a hydrolyzed aromatic-containing vinyl ether maleic anhydride copolymer, a half ester of an aromatic-containing vinyl ether maleic anhydride copolymer, and mixtures thereof, or (ii) an aromatic-containing acrylate copolymerized with an acid selected from the group consisting of acrylic acid and maleic acid. The coffee stain-resistant polyamide textile substrates made are also part of the invention.
    Type: Grant
    Filed: June 5, 1992
    Date of Patent: November 15, 1994
    Inventors: Lidia T. Calcaterra, Mathias P. Koljack, Qamardin Farishta, Michael G. Koehler, William B. Bedwell, Dale A. Hangey, George D. Green
  • Method to impart coffee stain resistant to polyamide textile substances
    Patent number: 5359010
    Abstract: The present invention provides methods and compositions to impart coffee stain resistance to polyamide textile substrates such as carpets. The compositions comprise either (i) a copolymer selected from the group consisting of a hydrolyzed aromatic-containing vinyl ether maleic anhydride copolymer, a half ester of an aromatic-containing vinyl ether maleic anhydride copolymer, and mixtures thereof, or (ii) an aromatic-containing acrylate copolymerized with an acid selected from the group consisting of acrylic acid and maleic acid. The coffee stain-resistant polyamide textile substrates made are also part of the invention.
    Type: Grant
    Filed: December 10, 1992
    Date of Patent: October 25, 1994
    Assignee: AlliedSignal Inc.
    Inventors: Lidia T. Calcaterra, Mathias P. Koljack, Qamardin Farishta, Michael G. Koehler, William B. Bedwell, Dale A. Hangey, George D. Green
  • Method to impart coffee stain resistance to polyamide fibers
    Patent number: 5135774
    Abstract: A method to impart coffee stain resistance to polyamide fibers such as those found in textile substrates (e.g., carpets). The method includes preparing an aqueous dispersion of charged microfine beads of either (i) a copolymer selected from the group consisting of a hydrolyzed aromatic-containing vinyl ether maleic anhydride copolymer, a half ester of an aromatic-containing vinyl ether maleic anhydride copolymer, and mixtures thereof, or (ii) an aromatic-containing acrylate copolymerized with an acid selected from the group consisting of acrylic acid and maleic acid, immersing the polyamide fiber in the aqueous dispersion so that the beads contact and coat the fiber via an electrostatic attraction. The aqueous dispersion is prepared by dissolving the polymer into a water-soluble solvent to form a solution, injecting the solution into water, and evaporating the solvent.
    Type: Grant
    Filed: March 27, 1990
    Date of Patent: August 4, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Lidia T. Calcaterra, Mathias P. Koljack, Qamardin Farishta, Michael G. Koehler, William B. Bedwell, Dale A. Hangey, George D. Green
  • Method to impart stain resistance to polyamide textile substrates
    Patent number: 5118551
    Abstract: The present invention provides methods and compositions to impart coffee stain resistance to polyamide textile substrate such as carpets. The compositions comprise either (i) a copolymer selected from the group consisting of a hydrolyzed aromatic-containing vinyl ether maleic anhydride copolymer, a half ester of an aromatic-containing vinyl ether maleic anhydride copolymer, and mixtures thereof, or (ii) an aromatic-containing acrylate copolymerized with an acid selected from the group consisting of acrylic acid and maleic acid. The coffee stain-resistant polyamide textile substrates made are also part of the invention.
    Type: Grant
    Filed: July 11, 1991
    Date of Patent: June 2, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Lidia T. Calcaterra, Mathias P. Koljack, Qamardin Farishta, Michael G. Koehler, William B. Bedwell, Dale A. Hangey, George D. Green