Patents by Inventor Jeffrey D. Tew

Jeffrey D. Tew 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: 7853466
    Abstract: Methods, systems and computer program products for supporting supply chain facility performance analysis. Methods include maintaining supply chain facility configuration information for a plurality of supply chain facilities. The method also includes identifying variables that are attributed to performance of the supply chain facilities. Data corresponding to one or more of the variables for selected supply chain facilities in the plurality of supply chain facilities is collected. Performance analysis is performed for the selected supply chain facilities using the data as input. The performance analysis includes executing a data envelope analysis (DEA) based three-stage performance analysis model, executing a statistical analysis and executing a sensitivity analysis. The results of the performance analysis are output. The results include a performance ranking of the selected supply chain facilities, a prescription for performance improvement, a correlation analysis, and a sensitivity analysis.
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: December 14, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Peiling Wu, Shang-Tae Yee, Devadatta M. Kulkarni, Jeffrey D. Tew
  • Publication number: 20080306783
    Abstract: A method, system, and computer program product for modeling a supply chain. The method includes modeling a storage element in the supply chain as a place node and modeling an activity in the supply chain as a transition node. The transition node includes at least one of an immediate transition node, a timed transition node, and a substitution transition node. An item moved through the supply chain is modeled as a token, where the token includes multiple attributes associated with the item. The place node is linked to the transition node with a directed arc, with the directed arc indicating the direction of token movement between the place node and the transition node. The linked place and transition nodes are organized as a supply chain model that represents the flow of items through the supply chain. In addition, performance metrics for the supply chain model are defined.
    Type: Application
    Filed: June 5, 2007
    Publication date: December 11, 2008
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Shang-Tae Yee, Jeffrey D. Tew
  • Publication number: 20080189236
    Abstract: Methods, systems and computer program products for monitoring a delivery chain network. An exemplary method includes accessing a database of delivery records. Each delivery record includes delivery characteristics including delivery time data for an item transported along a route. A group of delivery records having one or more specified delivery characteristics is selected from the database. The selected group includes delivery records for items transported along at least two different routes. The delivery time data for the group of delivery records is averaged to calculate bundled chart data. The bundled chart data is then output.
    Type: Application
    Filed: February 1, 2007
    Publication date: August 7, 2008
    Applicant: GM Global Technology Operations, Inc.
    Inventors: Earnest J. Foster, Lynn T. Truss, Jeffrey D. Tew, David A. Field
  • Publication number: 20080065436
    Abstract: Methods, systems and computer program products for supporting supply chain facility performance analysis. Methods include maintaining supply chain facility configuration information for a plurality of supply chain facilities. The method also includes identifying variables that are attributed to performance of the supply chain facilities. Data corresponding to one or more of the variables for selected supply chain facilities in the plurality of supply chain facilities is collected. Performance analysis is performed for the selected supply chain facilities using the data as input. The performance analysis includes executing a data envelope analysis (DEA) based three-stage performance analysis model, executing a statistical analysis and executing a sensitivity analysis. The results of the performance analysis are output. The results include a performance ranking of the selected supply chain facilities, a prescription for performance improvement, a correlation analysis, and a sensitivity analysis.
    Type: Application
    Filed: September 8, 2006
    Publication date: March 13, 2008
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Peiling Wu, Shang-Tae Yee, Devadatta M. Kulkarni, Jeffrey D. Tew