Patents by Inventor Kalyanji U. Patel

Kalyanji U. Patel 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).

  • Treatment of fibrous substrates, such as carpet, with fluorochemical
    Patent number: 4841090
    Abstract: Fluorochemical amine salt compounds containing one or more fluoroaliphatic radicals and one or more salt-forming amino groups which have cyanoalkyl groups as N-substituents groups, such compounds being useful as treating agents for fibrous substrates, such as textiles, e.g., carpet, to modify surface properties thereof, viz., to impart oil and water repellency to the surface of said substrates.
    Type: Grant
    Filed: September 29, 1987
    Date of Patent: June 20, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Kalyanji U. Patel
  • Leather with fluorochemical finish
    Patent number: 4564366
    Abstract: Fluorochemical aliphatic carboxylic acids, and water dispersible salts thereof, having fluoroaliphatic radicals and urylene and/or carbamato radicals, are used to impart oil and water repellency to fibrous substrates such as tanned leather.
    Type: Grant
    Filed: March 26, 1985
    Date of Patent: January 14, 1986
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Kalyanji U. Patel
  • Leather with fluorochemical finish
    Patent number: 4525305
    Abstract: Fluorochemical aliphatic carboxylic acids, and water dispersible salts thereof, having fluoroaliphatic radicals and urylene and/or carbamato radicals, are used to impart oil and water repellency to fibrous substrates such as tanned leather.
    Type: Grant
    Filed: October 25, 1982
    Date of Patent: June 25, 1985
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Kalyanji U. Patel
  • Fluorinated alcohols
    Patent number: 4468527
    Abstract: A fluoroaliphatic radical- and aliphatic chlorine-containing alcohol containing more than 25 weight percent carbon-bonded fluorine in the form of fluoroaliphatic radicals and at least one aliphatic chlorine, an ester of said alcohol and a carboxycylic acid being useful in the treatment of carpet.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: August 28, 1984
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Kalyanji U. Patel
  • Carpet treatment
    Patent number: 4340749
    Abstract: An ester of a fluoroaliphatic radical- and aliphatic chlorine-containing alcohol and a mono or polycarboxylic acid useful in carpet treatment.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: July 20, 1982
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Kalyanji U. Patel
  • Carpet treatment
    Patent number: 4264484
    Abstract: Carpet is rendered soil resistant and stain repellant by contacting it with a carpet treating composition comprising a liquid containing a water-insoluble addition polymer derived from polymerizable ethylenically unsaturated monomer free of nonvinylic fluorine and having at least one major transition temperature higher than about 25.degree. C., and a water-insoluble fluoroaliphatic radical- and aliphatic chlorine-containing ester having at least one major transition temperature higher than about 25.degree. C.
    Type: Grant
    Filed: December 21, 1979
    Date of Patent: April 28, 1981
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Kalyanji U. Patel
  • Cured fluorinated elastomer
    Patent number: 3988502
    Abstract: A cured fluorinated elastomeric copolymer of vinylidene fluoride and at least one comonomer selected from the group consisting of chlorotrifluoroethylene, perfluoropropene and tetrafluoroethylene, said cured elastomer having a compression set below about 10 percent after 24 hours at 205.degree. C. in ASTM D 395-61 method B and being prepared from a material having a Mooney 10 point rise at 120.degree. C. above 25 minutes using ASTM D 1646-63 method with the small rotor.
    Type: Grant
    Filed: December 17, 1971
    Date of Patent: October 26, 1976
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Kalyanji U. Patel, John E. Maier