Patents by Inventor Kathleen Kash

Kathleen Kash 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).

  • Semiconductor devices having strain-induced lateral confinement of charge carriers
    Patent number: 5012304
    Abstract: A semi-conductor device having the properties of carrier confinement induced by local variations of strain comprising a semi-conductor base material, a vertical confinement layer over the semi-conductor base material for vertical confining charge carriers and a strain layer which creates a local strain pattern in the underlying semi-conductor material which strain pattern laterally confines charge carriers in accordance with the strain pattern. The semi-conductor base may include a quantum-well, e.g., one formed utilizing a superlattice structure, where the charge carriers are laterally confined within the quantum well by the strain pattern.
    Type: Grant
    Filed: March 16, 1989
    Date of Patent: April 30, 1991
    Assignee: Bell Communications Research, Inc.
    Inventors: Kathleen Kash, John M. Worlock