Patents by Inventor Alfred Stubenvoll

Alfred Stubenvoll 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 improving the surfaces of roller bodies and balls
    Patent number: 4108689
    Abstract: The surfaces of antifriction elements and other steel surfaces in mutual sliding contact are improved by first degreasing the surfaces in a mild alkaline aqueous degreasing bath at a pH of about 7 to 10, by then rinsing with cold water, by browning the surfaces in a saturated aqueous solution of a selected salt material at temperatures of from 128.degree. to 135.degree. C.
    Type: Grant
    Filed: October 14, 1976
    Date of Patent: August 22, 1978
    Assignee: Daimler-Benz Aktiengesellschaft
    Inventors: Wolfgang Peter, Heinz Koch, Alfred Stubenvoll