Patents by Inventor Kong Ha

Kong Ha 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: 4685291
    Abstract: A particulate trap system used with a diesel engine has an exhaust conduit ducting exhaust materials through an exhaust cooler, then through a particulate trap, and then to the atmosphere. A by-pass conduit is connected in parallel with the exhaust cooler, and valves are located in the exhaust conduit and the by-pass conduit. A microprocessor-based control unit is arranged to allow normal operation with the exhaust materials passing through the cooler. However, when backpressure in the exhaust conduit reaches a predetermined level due to particulate build-up in the trap, the valves are gradually reversed, so that non-cooled exhaust materials arrive at the trap, thus regenerating it due to combustion.
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: August 11, 1987
    Assignee: Ontario Research Foundation
    Inventor: Kong Ha