Patents by Inventor James A. Topich, deceased

James A. Topich, deceased 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: 4754432
    Abstract: A multiconfigurable integrated circuit having volatile and nonvolatile segments configured and interconnected so that data can be nonvolatilely entered and transferred at high frequency in the volatile segment, so that formerly entered data can be nonvolatilely stored while new data is entered and volatiley utilized, and so that previously stored nonvolatile data can be recalled and volatilely utilized. In one form, the circuit is comprised of a shift register stage selectively connectable to a nonvolatile memory cell structure. Interconnection of multiple circuits and the addition of analog switches creates electronic equivalents of DIP switches and various other multiple pole selectively controlled switching configurations.
    Type: Grant
    Filed: July 25, 1986
    Date of Patent: June 28, 1988
    Assignee: NCR Corporation
    Inventor: James A. Topich, deceased
  • Patent number: 4748593
    Abstract: The circuit and structure of a direct write differential nonvolatile memory cell. The features of the cell include high speed read sensing, write without a prior erase operation, single polysilicon fabrication capability, and memory margining capabilities. The structural and functional symmetry maximizes cell density while providing complementary differential operation. In a preferred arrangement, the cell utilizes a pair of cross-coupled, capacitively complementary, centrally disposed floating gate electrodes. The cell is written directly by the provision of complementary signals on a pair of program lines, which lines are capacitively coupled to the floating gate electrodes. The data state of the cell is sensed by conduction in two bit lines, the conductive states of the lines being determined by the charge transferred onto the two floating gate electrodes during the simultaneous but complementary programming of such electrodes.
    Type: Grant
    Filed: September 8, 1986
    Date of Patent: May 31, 1988
    Assignee: NCR Corporation
    Inventors: James A. Topich, deceased, Raymond A. Turi, George C. Lockwood