Patents by Inventor Donal A. Spillane

Donal A. Spillane 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: 6192506
    Abstract: A logic controller includes a memory for storing representations of boolean logic. The boolean logic includes AND and OR boolean logic functions having target values and a plurality of inputs. The processor of the logic controller has input/output circuitry and communications circuitry which provide a plurality of input/output digital logic signals. The processor employs the digital logic signals and solves the boolean logic representations. A firmware routine solves each boolean logic function when the value of any of its inputs is equal to its target value.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: February 20, 2001
    Assignee: Westinghouse Process Control, Inc.
    Inventors: Suresh K. V. Vishnubhatla, Richard W. Kephart, Jr., Warren A. Edblad, Donal A. Spillane