Patents by Inventor Ralph Edward Sipple

Ralph Edward Sipple 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).

  • Statistical database query using random sampling of records
    Patent number: 5878426
    Abstract: A system and method for expediting database queries by using random sampling. Data associated with a database attribute is partitioned into multiple data classes using a query language grouping command. Each of the data classes is randomly sampled on an individual basis to obtain a corresponding number of class data samples, each of which are stored in a separate sample database table. Database queries are then applied to each of the class data samples in the sample database table.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: March 2, 1999
    Assignee: Unisys Corporation
    Inventors: James Michael Plasek, Ralph Edward Sipple