Patents by Inventor F Ryan Johnson

F Ryan Johnson 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).

  • Method for evaluating a conjunction of equity and range predicates using a constant number of operations
    Patent number: 7840554
    Abstract: Methods are described to simultaneously apply conjugates of equality, range, and in-list predicates. A first set of methods are described for the simultaneous application of equality predicates. A second set of methods are described for the simultaneous application of a mixture of range and equality predicates. A third method is described for the simultaneous applying a mixture of in-list predicates. The described methods allow for quick evaluation of complex predicates as they efficiently implement the computation done per record, while maintaining the same execution time irrespective of the number of fields.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: November 23, 2010
    Assignee: International Business Machines Corporation
    Inventors: F Ryan Johnson, Vijayshankar Raman, Garret Frederick Swart