Patents by Inventor Jack R. Kirchner

Jack R. Kirchner 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: 5580645
    Abstract: A substrate having oil-, water- and soil-repellency and/or soil release properties is produced by treating the substrate with a polyfluoro organic compound having at least 1 urea linkage derived from: (A) at least 1 polyisocyanate which contains at least three isocyanate groups per molecule, (B) at least 1 fluorochemical compound which contains (i) a single functional group having 1 or more Zerewitinoff hydrogen atom S and (ii) at least 2 carbon atoms each of which contains at least 2 fluorine atoms, and (C) sufficient water to react with from about 5% to about 60% of the isocyanate groups.
    Type: Grant
    Filed: August 8, 1995
    Date of Patent: December 3, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Jack R. Kirchner
  • Patent number: 5565564
    Abstract: Polyfluoro organic compound having at least one urea linkage derived from: (1) at least one polyisocyanate containing at least three isocyanate groups, (2) at least one fluorochemical compound which contains per molecule (a) a single functional group having one or more Zerewitinoff hydrogen atoms and (b) at least two carbon atoms each of which contains least two fluorine atoms, and (3) water in an amount sufficient to to react with from about 5% to about 60% of the isocyanate groups.
    Type: Grant
    Filed: March 3, 1995
    Date of Patent: October 15, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Jack R. Kirchner
  • Patent number: 5509939
    Abstract: Substrates are made oil-, water- and soil-repellent and/or provided with soil-relase properties by applying to them urea linkage-containing alkoxypolyoxyalkylene fluorocarbamates prepared by reacting (a) at least one polyisocyanate which contains at least three isocyanate groups with (b) at least one fluorochemical reagent which contains one functional group which has at least one H and at least two C atoms each of which contains at least two F atoms, (c) at least one hydrophilic, water-solvatable reagent which contains a single functional group which has at least one reactive H, (d) at least one reagent which contains one reactive H and which on reaction with an isocyanate group yields functionality which has abeyant chemical reactivity with fibrous substrates and (e) then with water, reactants (b), (c) and (d) being reacted with 55% to 95% of said isocyanate groups, and water with the remainder.
    Type: Grant
    Filed: October 17, 1994
    Date of Patent: April 23, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Jack R. Kirchner
  • Patent number: 5481027
    Abstract: Urea linkage-containing alkoxypolyoxyalkylene fluorocarbamates prepared by reacting (a) at least one polyisocyanate which contains at least three isocyanate groups with (b) at least one fluorochemical reagent which contains one functional group which has at least one H and at least two C atoms each of which contains at least two F atoms, (c) at least one hydrophilic, water-solvatable reagent which contains a single functional group which has at least one reactive H, (d) at least one reagent which contains one reactive H and which on reaction with an isocyanate group yields functionality which has abeyant chemical reactivity with fibrous substrates and (e) then with water, reactants (b), (c) and (d) being reacted with 55% to 95% of said isocyanate groups, and water with the remainder.
    Type: Grant
    Filed: March 7, 1994
    Date of Patent: January 2, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Jack R. Kirchner
  • Patent number: 5414111
    Abstract: Polyfluoro organic compound having at least one urea linkage derived from: (1) at least one polyisocyanate containing at least three isocyanate groups, (2) at least one fluorochemical compound which contains per molecule (a) a single functional group having one or more Zerewitinoff hydrogen atoms and (b) at least two carbon atoms each of which contains at least two fluorine atoms, and (3) water in an amount sufficient to to react with from about 5% to about 60% of the isocyanate groups.
    Type: Grant
    Filed: February 2, 1994
    Date of Patent: May 9, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Jack R. Kirchner
  • Patent number: 5411766
    Abstract: Process for imparting oil-, water- and soil-repellency and/or soil release properties to a substrate, and substrates so-treated, which comprises applying to the substrate a polyfluoro organic compound having at least 1 urea linkage derived from: (A) at least 1 polyisocyanate which contains at least three isocyanate groups per molecule, (B) at least 1 fluorochemical compound which contains (i) a single functional group having 1 or more Zerewitinoff H's and (ii) at least 2 C's each of which contains at least 2 F's, and (C) sufficient water to react with from about 5% to about 60% of the --NCO groups.
    Type: Grant
    Filed: December 10, 1993
    Date of Patent: May 2, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Jack R. Kirchner
  • Patent number: 5410073
    Abstract: Process comprising (I) reacting (a) at least one polyisocyanate or mixture of polyisocyanates which contains at least three isocyanate groups per molecule with (b) a stoichiometric deficiency of at least one fluorochemical compound which contains per molecule (i) a single functional group having one or more Zerewitinoff hydrogen atoms and (ii) at least two carbon atoms each of which contains at least two fluorine atoms, and (II) thereafter forming one or more urea linkages per mol of said polyisocyanate by reacting the remaining isocyanate groups with water in an amount sufficient to to react with from about 5% to about 60% of the isocyanate groups in said polyisocyanate.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: April 25, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Jack R. Kirchner
  • Patent number: 5202506
    Abstract: A process for the formation of perfluoroalkylethyl alcohols from perfluoroalkylethyl iodides is disclosed. The process involves treatment of the perfluoroalkylethyl iodide with oleum.
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: April 13, 1993
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Jack R. Kirchner, Leonard H. Beck, James E. Dowd
  • Patent number: 4038151
    Abstract: Improved cards for use in an automated machine to detect the presence of specific microbes and thereby identify them, enumerate them, and/or determine their susceptibility to antibiotics. Each card includes a plate having conical detection wells each with a selected medium therein, at least one filling port with a septum which is retained by a collar formed therein, and filler passages of specific length and configuration connecting the port to the wells. Discontinuities are provided in the filler passages to prevent unwanted fluid flow and to reduce migration of the microbes when the card is in use. Overflow chambers of a specific configuration are also provided adjacent the wells to entrap bubbles.
    Type: Grant
    Filed: July 29, 1976
    Date of Patent: July 26, 1977
    Assignee: McDonnell Douglas Corporation
    Inventors: Norman L. Fadler, Paul W. Jones, Jack R. Kirchner
  • Patent number: D243542
    Type: Grant
    Filed: February 20, 1976
    Date of Patent: March 1, 1977
    Assignee: McDonnell Douglas Corporation
    Inventors: Norman L. Fadler, Paul W. Jones, Jack R. Kirchner
  • Patent number: D243543
    Type: Grant
    Filed: February 20, 1976
    Date of Patent: March 1, 1977
    Assignee: McDonnell Douglas Corporation
    Inventors: Norman L. Fadler, Paul W. Jones, Jack R. Kirchner
  • Patent number: D254687
    Type: Grant
    Filed: January 25, 1979
    Date of Patent: April 8, 1980
    Assignee: McDonnell Douglas Corporation
    Inventors: Norman L. Fadler, Jack R. Kirchner, Paul W. Jones