Patents by Inventor Erwin Diehl

Erwin Diehl 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 high-temperature galvanizing
    Patent number: 4364978
    Abstract: The invention relates to a process for the high-temperature galvanization of steel parts containing from 0.01 to 0.6 percent by weight of silicon at temperatures of 470.degree. to 550.degree. C., the steel parts being immersed in a zinc melt containing lead in a quantity up to that maximally soluble at the operational temperature employed but containing at least about 2 percent by weight based upon the weight of the zinc melt. In this manner thick and uniform coatings of zinc are achieved.
    Type: Grant
    Filed: July 7, 1981
    Date of Patent: December 21, 1982
    Assignee: Th. Goldschmidt AG
    Inventors: Erwin Diehl, Wolfgang Muller, Artur Stroh