Patents by Inventor Perti J. Sippola

Perti J. Sippola 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 producing hot-dip zinc coated steel sheet free of dross pick-up defects on coating and associated apparatus
    Patent number: 5958518
    Abstract: The present invention relates to a system and a method for using the system to provide a dross-free zinc bath for hot-dip galvanizing of steel strip or wire. The system includes the operation and apparatus for carrying out the operation of directing a zinc solution directly against both sides of a steel strip, along at least 50% of the processing length of the strip.
    Type: Grant
    Filed: January 29, 1998
    Date of Patent: September 28, 1999
    Inventor: Perti J. Sippola