Patents by Inventor Rainer Langwald

Rainer Langwald 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 for preventing the buildup of oily deposits on rolling mill scale
    Patent number: 4918959
    Abstract: The formation of mill scale contaminated with an appreciable amount of oily substances is prevented by spraying rolled steel with an aqueous stream under high pressure containing an effective amount of a surfactant.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: April 24, 1990
    Assignee: Petrolite Corporation
    Inventors: Dennis P. Parazak, Charles W. Burkhardt, Rainer Langwald