Patents by Inventor John K. Harris

John K. Harris 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).

  • Fast-setting latex coatings and formulations
    Patent number: 6251485
    Abstract: A fast-setting coating material can be prepared by contacting a stable aqueous dispersion of a polymer that contains strong cationic groups and weak acid groups onto a substrate that is basic or rendered to be basic. Alternatively, the coating material can be prepared by contacting in either order or concurrently the surface of a substrate with two separate polymers, one of which contains strong cationic groups, and the other of which contains weak acid groups. In this case, the substrate need not be basic for the coating to quickly set.
    Type: Grant
    Filed: October 20, 1999
    Date of Patent: June 26, 2001
    Assignee: The Dow Chemical Company
    Inventors: John K. Harris, Donald L. Schmidt, Gene D. Rose
  • Rapid set latexes and foamed articles prepared therefrom
    Patent number: 6025404
    Abstract: Rapid set cellular articles can be prepared from a latex by the steps of: a) frothing a latex that contains a dispersed polymer having pendant cationic groups or adsorbing cationic molecules or both, and pendant acid groups; and b) rendering the frothed latex sufficiently basic to make the cellular article. The cellular articles of the present invention are advantageously prepared at ambient temperatures and pressures, and in the absence of organic solvents or CFCs.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: February 15, 2000
    Assignee: The Dow Chemical Company
    Inventors: John K. Harris, Gene D. Rose, Donald L. Schmidt
  • Fast-setting latex coating and formulations
    Patent number: 5997952
    Abstract: A method of preparing a fast-setting coating material on a substrate which comprises contacting a stable aqueous dispersion of a polymer that contains strong cationic groups and weak acid groups onto a substrate that is basic or treated to be basic.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: December 7, 1999
    Assignee: The Dow Chemical Company
    Inventors: John K. Harris, Donald L. Schmidt, Gene D. Rose