Patents by Inventor Phillip Norrdahl

Phillip Norrdahl 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).

  • Paper product having enhanced printing properties and related method of manufacture
    Patent number: 6332953
    Abstract: A paper product suitable for use in making envelopes and the like and having enhanced printability. The enhancement in printability is attained through the use of shoe nip calendering. The final product has the following material properties: (1) a basis weight in the range 16-32 lb./1,300 ft2; (2) a density equal to or less than 0.75 g/cc; (3) a smoothness as measured by the Hagerty/Sheffield test (TAPPI Test Method T 538 om-88) greater than 200 Sheffield units; and (4) a Parker Print Surf roughness as measured by the Parker test (TAPPI Test Method T 555 om-94) less than 5.0 microns (measured using a pressure of 10 kgf/cm2 with a soft backing).
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: December 25, 2001
    Assignee: International Paper Company
    Inventors: Kapil Mohan Singh, Alexander A. Koukoulas, Dennis W. Anderson, Phillip Norrdahl, Douglas L. Hamilton