Patents by Inventor Y. Ron Xu

Y. Ron Xu 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).

  • Patent number: 5717130
    Abstract: Methods and apparatus for determining and assessing the accuracy of exhaust gas measurements using the total emission method is provided which allows for virtually real-time determination of the presence of a source of inaccuracy in the total emission measurement, thereby notifying an operator to interrupt the test prior to its completion to search out the source of the inaccuracy. In accordance with one aspect of the present invention, the measured total hydrocarbons are treated as unburned fuel (C.sub.8 basis) plus burning zone hydrocarbons (C.sub.1 basis).
    Type: Grant
    Filed: August 23, 1996
    Date of Patent: February 10, 1998
    Assignee: Outboard Marine Corporation
    Inventors: Y. Ron Xu, William B. Rush