Patents by Inventor Laust O. Madsen

Laust O. Madsen 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).

  • Reinforcing fibers and method of producing same corona treatment of thermoplastic fibers
    Patent number: 4310478
    Abstract: Reinforcing fibers of plastic having a surface tension of from 40 dyn/cm to about the surface tension of water are disclosed. The fibers can be easily and uniformly disposed in matrices. For organic matrices, a surface tension of 40-50 dyn/cm is effective. For cement matrices, a surface tension about 70-75 dyn/cm is effective. The high surface tensions are obtained by a corona treatment and subsequent application of a hydrophilic avivage. Corona treatment may be performed on the fibers, or on films from which the fibers are made.
    Type: Grant
    Filed: July 6, 1979
    Date of Patent: January 12, 1982
    Assignee: Jacob Holm Varde A/S
    Inventors: Jorgen Balslev, Laust O. Madsen