Patents by Inventor Thomas D. Sandry

Thomas D. Sandry 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).

  • Method for manufacturing paper and paperboard using fracture toughness measurement
    Patent number: 6712936
    Abstract: A mathematical model is used to design paper and paperboard having improved runnability. The mathematical model provides an estimate of fracture toughness for an optimized paper product based on specific measurement parameters, e.g., filler percent, softwood content and caliper for optimal fracture toughness. After the optimizing set of measurement parameters has been acquired, these parameters can be used to manufacture grades of paper having improved runnability performance, e.g., in printing presses.
    Type: Grant
    Filed: April 19, 2001
    Date of Patent: March 30, 2004
    Assignee: International Paper Company
    Inventors: Wadood Hamad, Xiang Yu, Thomas D. Sandry
  • Method for manufacturing paper and paperboard using fracture toughness measurement
    Publication number: 20030041991
    Abstract: A mathematical model is used to design paper and paperboard having improved runnability. The mathematical model provides an estimate of fracture toughness for an optimized paper product based on specific measurement parameters, e.g., filler percent, softwood content and caliper for optimal fracture toughness. After the optimizing set of measurement parameters has been acquired, these parameters can be used to manufacture grades of paper having improved runnability performance, e.g., in printing presses.
    Type: Application
    Filed: April 19, 2001
    Publication date: March 6, 2003
    Inventors: Wadood Hamad, Xiang Yu, Thomas D. Sandry
  • Method for manufacturing paper and paperboard using fracture toughness measurement
    Publication number: 20020174965
    Abstract: A mathematical model is used to design paper and paperboard having improved runnability. The mathematical model provides an estimate of fracture toughness for an optimized paper product based on specific measurement parameters, e.g., filler percent, softwood content and caliper for optimal fracture toughness. After the optimizing set of measurement parameters has been acquired, these parameters can be used to manufacture grades of paper having improved runnability performance, e.g., in printing presses.
    Type: Application
    Filed: April 8, 2002
    Publication date: November 28, 2002
    Inventors: Wadood Hamad, Xiang Yu, Thomas D. Sandry