Patents by Inventor Jerald Allen Hallmark

Jerald Allen Hallmark 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 structure having a crystalline alkaline earth metal oxide interface with silicon
    Patent number: 6248459
    Abstract: A semiconductor structure comprises a silicon substrate (10), one or more layers of single crystal oxides (26), and an interface (14) between the silicon substrate and the one or more layers of single crystal oxides, the interface manufactured with a crystalline material which matches the lattice constant of silicon. The interface is an atomic layer of silicon, oxygen, and a metal in the form XSiO2, where X is a metal.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: June 19, 2001
    Assignee: Motorola, Inc.
    Inventors: Jun Wang, William Jay Ooms, Jerald Allen Hallmark
  • Variable conducting element and method of programming
    Patent number: 5886920
    Abstract: A variable conducting element (10) and method for programming a constant current or constant resistance provided at output terminals (24 and 26) of a ferroelectric transistor (12). The ferroelectric transistor (12) has portions of a ferroelectric material (32A) programmed having up-polarization states separated by domain walls (34) from portions of a ferroelectric material (32B) programmed having down-polarization states. The portion of the ferroelectric material (32A) programmed in the up-polarization state forms current conduction channels between a source region (23) and a drain region (25) of the ferroelectric transistor (12). The ferroelectric transistor (12) is programmed through a capacitor (14) to adjust the charge supplied to a control terminal (22) of the ferroelectric transistor (12).
    Type: Grant
    Filed: December 1, 1997
    Date of Patent: March 23, 1999
    Assignee: Motorola, Inc.
    Inventors: Daniel S. Marshall, Jerald Allen Hallmark, David J. Anderson, Ellen Lan