Patents by Inventor Ka K. Wai

Ka K. Wai 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: 5455741
    Abstract: An electronic device comprises a three dimensional electronic element holder of a non-conducting material having at least one cavity in a first surface and a plurality of lead through holes with inlet guides extending from the cavity to a second surface having a circuit thereon, an electronic element mounted in the cavity and having a plurality of leads, a plurality of the leads extending via the through holes from the element to the second surface, and a plurality of lead terminal recesses formed at the second surface for for receiving and forming terminal ends and connections of the leads to the circuit on the second surface.
    Type: Grant
    Filed: October 26, 1993
    Date of Patent: October 3, 1995
    Assignee: Pulse Engineering, Inc.
    Inventors: Ka K. Wai, Moin Ahmad, Aurelio J. Gutierrez, James D. Lint
  • Patent number: 5351167
    Abstract: An electronic component adapted for surface mounting on a PC board has an elongate bobbin made of a dielectric material. A coil of wire is wound about the winding support surface of the bobbin. The coil has a pair of lead terminations which are wrapped around a pair of T-shaped lead termination support members extending from the same side of the bobbin. When the bobbin rests on top of a PC board, the support members position the wrapped lead terminations slightly above solder pads.
    Type: Grant
    Filed: May 17, 1993
    Date of Patent: September 27, 1994
    Assignee: Pulse Engineering, Inc.
    Inventors: Ka K. Wai, Aurelio J. Gutierrez
  • Patent number: 5032953
    Abstract: A single in-line package adapted for surface mounting to a printed circuit board comprises an electronic component, a plurality of leads and a specially configured housing that encloses and protects the electronic component. The outer ends of the leads extend adjacent a tapered lower edge of the housing. The housing further has projections for engaging the upper surface of a printed circuit board to maintain the housing in a stable upright orientation with the outer ends of the leads in physical contact with corresponding solder pads on the printed circuit board during solder re-flow. The tapered edge of the housing is configured to permit subsequent inspection of a plurality of resulting solder joints for acceptable whetting.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: July 16, 1991
    Assignee: Pulse Engineering, Inc.
    Inventors: Robert L. Carl, Ka K. Wai, Jose L. V. Ortega