Patents by Inventor Ronald A. Greenlaw

Ronald A. Greenlaw 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).

  • Circuit board having traces with distinct transmission impedances
    Patent number: 6932518
    Abstract: The present invention is an optoelectronic device including a circuit board with a plurality of signal traces, a first ground plane, and a second ground plane. The impedance of a signal trace is determined by which of the first ground plane and the second ground plane is closest to the signal trace. The area of the first ground plane coincident with a first signal trace is left intact in order to set the impedance of the first signal trace, by reference to the first ground plane. The area of the first ground plane coincident with a second signal trace is removed in order to set the impedance of the second signal trace, by reference to the second ground plane.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: August 23, 2005
    Assignee: Finisar Corporation
    Inventor: Ronald A. Greenlaw
  • Circuit board having traces with distinct transmission impedances
    Publication number: 20030214860
    Abstract: The present invention is an optoelectronic device including a circuit board with a plurality of signal traces, a first ground plane, and a second ground plane. The impedance of a signal trace is determined by which of the first ground plane and the second ground plane is closest to the signal trace. The area of the first ground plane coincident with a first signal trace is left intact in order to set the impedance of the first signal trace, by reference to the first ground plane. The area of the first ground plane coincident with a second signal trace is removed in order to set the impedance of the second signal trace, by reference to the second ground plane.
    Type: Application
    Filed: March 19, 2003
    Publication date: November 20, 2003
    Applicant: Finisar Corporation
    Inventor: Ronald A. Greenlaw