Patents by Inventor Alfred Schlappa

Alfred Schlappa 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).

  • Seal for construction element
    Patent number: 5968615
    Abstract: The subject of the invention is a seal of flexible/compressible polymer and a surface coating made of a material which is incombustible and/or maintains its integrity at high temperature. The seals are useful in the construction of fire-resistant structures.
    Type: Grant
    Filed: May 3, 1996
    Date of Patent: October 19, 1999
    Assignee: Norton Performance Plastics S.A.
    Inventor: Alfred Schlappa