Patents by Inventor Krysztof Nauka

Krysztof Nauka 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).

  • Indium chalcogenide, gallium chalcogenide, and indium-gallium chalcogenide phase-change media for ultra-high-density data-storage devices
    Patent number: 6900468
    Abstract: Ultra-high-density data-storage media employing indium chalcogenide, gallium chalcogenide, and indium-gallium chalcogenide films to form bit-storage regions that act as photoconductive, photovoltaic, or photoluminescent semiconductor devices that produce electrical signals when exposed to electromagnetic radiation, or to form bit-storage regions that act as cathodoconductive, cathodovoltaic, or cathodoluminescent semiconductor devices that produce electrical signals when exposed to electron beams. Two values of a bit are represented by two solid phases of the data-storage medium, a crystalline phase and an amorphous phase, with transition between the two phases effected by heating the bit storage region.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: May 31, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Alison Chalken, Gary Gibson, Heon Lee, Krysztof Nauka, Chung-Ching Yang