Patents by Inventor William D. Lammers

William D. Lammers 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 of making fibrillated tape
    Patent number: 5084121
    Abstract: Pressure-sensitive adhesive tape comprising a backing, layer of fibrillated, polymeric film adhered to at least one major surface of said backing, and a layer of pressure-sensitive adhesive applied to the major surface of said layer of said fibrillated, polymeric film not facing said backing. A method for manufacturing the aforementioned pressure-sensitive adhesive tape is also provided.The tape of this invention can be made to have a tensile strength in excess of 100 lbs/in and cross-direction tear resistance in excess of 11 lbs/in.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: January 28, 1992
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: William D. Lammers, Ronald P. Leseman
  • Fibrillated tape
    Patent number: 4973517
    Abstract: Pressure-sensitive adhesive tape comprising a backing, layer of fibrillated, polymeric film adhered to at least one major surface of said backing, and a layer of pressure-sensitive adhesive applied to the major surface of said layer of said fibrillated, polymeric film not facing said backing. A methd for manufacturing the aforementioned pressure-sensitive adhesive tape is also provided.The tape of this invention can be made to have a tensile strength in excess of 100 lbs/in and cross-direction tear resistance in excess of 11 lbs/in.
    Type: Grant
    Filed: August 4, 1988
    Date of Patent: November 27, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: William D. Lammers, Ronald P. Leseman