Patents by Inventor Thanh Ho

Thanh Ho 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).

  • Optical sensor and method of making same
    Patent number: 4797549
    Abstract: An optical sensor has a gap for a toothed modulator wheel and accurately aligned optical fibers on either side of the gap. The fibers form a U-shape to allow compact sensor design. The sensor is fabricated by inserting a single optical fiber in a mold and supporting the fiber in a U-shape such that the bottom of the U bend includes a straight portion. A thermosetting material is molded around the fiber to form a body and encapsulsate the fiber. A gap is formed by excluding or removing the resin from the region of the straight portion. A part of the straight portion of the fiber at the gap is removed so that the remaining spaced ends are inherently aligned across the gap.
    Type: Grant
    Filed: November 9, 1987
    Date of Patent: January 10, 1989
    Assignee: General Motors Corporation
    Inventors: Thanh Ho, Gerald T. Fattic