Patents by Inventor Cheng-Chueh Kuo

Cheng-Chueh Kuo 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).

  • Bench test method for rating the corrosion inhibiting ability of an oleaginous fluid
    Patent number: 5278071
    Abstract: A bench-test method which correlates well with other more costly engine test methods, and which can be used to screen oleaginous formulation prior to performing expensive engine tests. The method comprises a) contacting ball bearing(s) having a smooth surface area with an oleaginous fluid to be screened; b) treating the oleaginous fluid during contacting with corrosive vapor for a period of time and at a temperature sufficient to form a metal oxide coating on the ball bearing(s) surface; and c) visually rating the metal oxide coating on the ball bearings.
    Type: Grant
    Filed: May 6, 1992
    Date of Patent: January 11, 1994
    Assignee: Ethyl Corporation
    Inventors: Cheng-Chueh Kuo, David M. Marchand