Patents by Inventor Ieeki Ahn

Ieeki Ahn 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 measuring vehicle motion resistances using short distance coast-down test based on the distance-time data
    Patent number: 5686651
    Abstract: The present invention is related to a method for measuring vehicle motion resistances using the vehicle coast-down testing method. More specifically, the initial coast-down speed of the vehicle is divided into a low speed range and a high speed range. Each range is tested to obtain physically meaningful test variables for each range. By combining the obtained variables, the length of the test road required for previous coast-down test methods can be significantly reduced. Additionally, vehicle motion resistances may be more accurately measured and analyzed.
    Type: Grant
    Filed: February 6, 1996
    Date of Patent: November 11, 1997
    Assignee: Korea Institute of Science and Technology
    Inventors: Nahmkeon Hur, Ieeki Ahn, Vladimir A. Patrushov