Patents by Inventor Wilfried Westerholt

Wilfried Westerholt 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).

  • Process for the purification, modification and heating of a cast-iron melt
    Patent number: 4130419
    Abstract: A process for the treatment of a cast-iron melt with oxygen, e.g. for raising the temperature thereof or otherwise modifying the composition of the melt in which the oxygen is introduced directly into the liquid cast iron at a rate (quantity per unit time) so controlled that there is no smoke development above the melt. The control is effected by feeding oxygen into the melt at progressively increasing rates until incipient smoke formation is observed above the melt and then stepping back the oxygen feed until the smoke evolution ceases.
    Type: Grant
    Filed: March 11, 1977
    Date of Patent: December 19, 1978
    Assignee: Linde AG
    Inventors: Roland Hummer, Wolfgang Thury, Wilfried Westerholt, Gundolf Hollerling, Reinhard Strigl