Patents by Inventor Steve Kirk

Steve Kirk 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 accelerating queries containing local range conditions using subtraction of cumulative bitmaps
    Patent number: 9047342
    Abstract: A system, method, and computer program product are provided for optimizing a range-based query on a table in a database system.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: June 2, 2015
    Assignee: SYBASE, INC.
    Inventors: Steve Kirk, Neil Burkhard
  • Method For Accelerating Queries Containing Local Range Conditions Using Subtraction of Cumulative Bitmaps
    Publication number: 20090171916
    Abstract: A system, method, and computer program product are provided for optimizing a range-based query on a table in a database system.
    Type: Application
    Filed: December 23, 2008
    Publication date: July 2, 2009
    Applicant: Sybase, Inc.
    Inventors: Steve KIRK, Neil BURKHARD
  • Enhanced sealing arrangement for a rotary valve shaft
    Patent number: 5326074
    Abstract: A valve has an actuating shaft packing assembly for located in a valve enclosure cover for preventing leakage of process fluid into the space between the actuating shaft and the cylindrical sidewall of a bore in the cover. The assembly includes an annular lip located at the axial end of the bore proximal to the fluid control member. The lip extends axially away from the fluid control member. An annular sealing ring is positioned between the lip and the cylindrical sidewall of the bore and formed of a material having a greater coefficient of thermal expansion than the valve body or actuating shaft. The annular ring shrinks when cooled and increases the sealing effectiveness between the sealing ring and the lip for enhanced suppression of fluid flow between the sealing assembly and the cylindrical sidewall.
    Type: Grant
    Filed: November 6, 1992
    Date of Patent: July 5, 1994
    Assignee: Xomox Corporation
    Inventors: Thomas F. Spock, Jr., David Klotter, Steve Kirk