Patents by Inventor Frederick Karsa

Frederick Karsa 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).

  • Test to measure curling tendency of paper in laser printers
    Patent number: 7743655
    Abstract: The invention provides an apparatus and method for testing the tendency of a paper to curl. The paper is cut from a paper making machine and rapidly humidified to standard TAPPI conditions, and is thereafter run through an apparatus having a substantially vertically oriented nip. The paper is measured for curl, all data are tabulated and fed back into a data acquisition or paper machine control system.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: June 29, 2010
    Assignee: International Paper Company
    Inventors: Kapil M Singh, Williams Shields, Frederick Karsa
  • Test to measure curling tendency of paper in laser printers
    Publication number: 20090133488
    Abstract: The invention provides an apparatus and method for testing the tendency of a paper to curl. The paper is cut from a paper making machine and rapidly humidified to standard TAPPI conditions, and is thereafter run through an apparatus having a substantially vertically oriented nip. The paper is measured for curl, all data are tabulated and fed back into a data acquisition or paper machine control system.
    Type: Application
    Filed: November 18, 2008
    Publication date: May 28, 2009
    Inventors: Kapil Mohan Singh, Williams Shields, Frederick Karsa
  • Test to measure curling tendency of paper in laser printers
    Patent number: 7451643
    Abstract: The invention provides an apparatus and method for testing the tendency of a paper to curl. The paper is cut from a paper making machine and rapidly humidified to standard TAPPI conditions, and is thereafter run through an apparatus having a substantially vertically oriented nip. The paper is measured for curl, all data are tabulated and fed back into a data acquisition or paper machine control system.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: November 18, 2008
    Assignee: International Paper Co.
    Inventors: Kapil Mohan Singh, William Shields, Frederick Karsa
  • Test to measure curling tendency of paper in laser printers
    Patent number: 7059181
    Abstract: The invention provides an apparatus and method for testing the tendency of a paper to curl. The paper is cut from a paper making machine and rapidly humidified to standard TAPPI conditions, and is thereafter run through an apparatus having a substantially vertically oriented nip. The paper is measured for curl, all data are tabulated and fed back into a data acquisition or paper machine control system.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: June 13, 2006
    Assignee: International Paper Co.
    Inventors: Kapil Mohan Singh, William Shields, Frederick Karsa
  • Test to measure curling tendency of paper in laser printers
    Publication number: 20060112762
    Abstract: The invention provides an apparatus and method for testing the tendency of a paper to curl. The paper is cut from a paper making machine and rapidly humidified to standard TAPPI conditions, and is thereafter run through an apparatus having a substantially vertically oriented nip. The paper is measured for curl, all data are tabulated and fed back into a data acquisition or paper machine control system.
    Type: Application
    Filed: January 12, 2006
    Publication date: June 1, 2006
    Inventors: Kapil Singh, William Shields, Frederick Karsa
  • Test to measure curling tendency of paper in laser printers
    Publication number: 20050097950
    Abstract: The invention provides an apparatus and method for testing the tendency of a paper to curl. The paper is cut from a paper making machine and rapidly humidified to standard TAPPI conditions, and is thereafter run through an apparatus having a substantially vertically oriented nip. The paper is measured for curl, all data are tabulated and fed back into a data acquisition or paper machine control system.
    Type: Application
    Filed: November 10, 2003
    Publication date: May 12, 2005
    Inventors: Kapil Singh, William Shields, Frederick Karsa