Patents by Inventor Charles D. Cofield

Charles D. Cofield 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: 8716392
    Abstract: Described herein are nonfluorinated polyurethanes having (a) a plurality of silicon polyol units and (b) a plurality of organic polyol units, wherein at least one of the organic polyol units has an ionizable group. The polyurethanes can be applied to a variety of different articles. The polyurethanes can impart a number of beneficial properties to an article including, but not limited to, liquid repellency, stain resistance, and bleach resistance. The nonfluorinated polyurethanes described herein are as effective or perform substantially better than fluorinated compounds currently used in the market. Methods for making the nonfluorinated polyurethanes are also described herein.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: May 6, 2014
    Assignee: Arrowstar LLC
    Inventors: James R. Bartley, Vance W. Brown, James K. Calhoun, Jr., Charles D. Cofield, John R. I. Eubanks
  • Patent number: 8716396
    Abstract: Described herein are nonfluorinated polyurethanes having (a) a plurality of silicon polyol units and (b) a plurality of organic polyol units, wherein at least one of the organic polyol units has an ionizable group, and wherein the nonfluorinated polyurethanes are terminated by amino groups. The polyurethanes can be applied to a variety of different articles. The polyurethanes can impart a number of beneficial properties to an article including, but not limited to, liquid repellency, stain resistance, and bleach resistance. The nonfluorinated polyurethanes described herein are as effective or perform substantially better than fluorinated compounds currently used in the market. Methods for making the nonfluorinated polyurethanes are also described herein.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: May 6, 2014
    Assignee: Arrowstar LLC
    Inventors: James R. Bartley, Vance W. Brown, James K. Calhoun, Jr., Charles D. Cofield, John R. I. Eubanks
  • Publication number: 20130281614
    Abstract: Described herein are nonfluorinated polyurethanes having (a) a plurality of silicon polyol units and (b) a plurality of organic polyol units, wherein at least one of the organic polyol units has an ionizable group, and wherein the nonfluorinated polyurethanes are terminated by amino groups. The polyurethanes can be applied to a variety of different articles. The polyurethanes can impart a number of beneficial properties to an article including, but not limited to, liquid repellency, stain resistance, and bleach resistance. The nonfluorinated polyurethanes described herein are as effective or perform substantially better than fluorinated compounds currently used in the market. Methods for making the nonfluorinated polyurethanes are also described herein.
    Type: Application
    Filed: February 8, 2013
    Publication date: October 24, 2013
    Applicant: ARROWSTAR, LLC
    Inventors: James R. BARTLEY, Vance W. BROWN, James K. CALHOUN, JR., Charles D. Cofield, John R. I. EUBANKS
  • Publication number: 20130281606
    Abstract: Described herein are nonfluorinated polyurethanes having (a) a plurality of silicon polyol units and (b) a plurality of organic polyol units, wherein at least one of the organic polyol units has an ionizable group. The polyurethanes can be applied to a variety of different articles. The polyurethanes can impart a number of beneficial properties to an article including, but not limited to, liquid repellency, stain resistance, and bleach resistance. The nonfluorinated polyurethanes described herein are as effective or perform substantially better than fluorinated compounds currently used in the market. Methods for making the nonfluorinated polyurethanes are also described herein.
    Type: Application
    Filed: July 17, 2012
    Publication date: October 24, 2013
    Applicant: ARROWSTAR LLC
    Inventors: James R. Bartley, Vance W. Brown, James K. Calhoun, Charles D. Cofield, John R. I. Eubanks
  • Patent number: 5489313
    Abstract: The invention relates to a process for increasing the dyeability of textile fibers and fabrics without the need to use a salt in the dyebath. The dyeing is performed on fibers or fabrics which have been treated with sodium hydroxide and an epoxy ammonium salt of the formula: ##STR1## wherein R,R',R", and R"' are alkyl radicals having 1 to 8 carbon atoms, and X.sup.- is an anionic group selected from the group consisting of sulfate, sulfonate and halide.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: February 6, 1996
    Assignee: American Emulsions Inc.
    Inventors: David M. Hall, Tony M. Leonard, Charles D. Cofield, Hugh W. Barrow
  • Patent number: 5330541
    Abstract: The invention relates to a process for increasing the dyeability of textile fibers and fabrics without the need to use a salt in the dyebath. The dyeing is performed on fibers or fabrics which have been treated with potassium hydroxide and an epoxy ammonium salt of the formula: ##STR1## wherein R, R', R", and R'" are alkyl radicals having 1 to 8 carbon atoms, and X.sup.- is an anionic group selected from the group consisting of sulfate, sulfonate and halide.
    Type: Grant
    Filed: December 15, 1992
    Date of Patent: July 19, 1994
    Assignee: American Emulsions, Co.
    Inventors: David M. Hall, Tony M. Leonard, Charles D. Cofield, Hugh W. Barrow