Patents by Inventor Roy A. Stewart

Roy A. Stewart 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).

  • Market research method and system for collecting retail store market research data
    Patent number: 5315093
    Abstract: A market research system and method are provided. A plurality of cooperating establishments are included in a market research test area. Each cooperating establishment is adapted for collecting and storing market research data. A computer system remotely located from the plurality of cooperating establishments stores a library of bar coded indicia and market research data collected from the cooperating establishments. A unique bar coded indicia is assigned to multiple displays within each of the plurality of cooperating establishments. A corresponding assigned bar coded indicia is applied to the displays within each cooperating establishment.
    Type: Grant
    Filed: February 5, 1992
    Date of Patent: May 24, 1994
    Assignee: A. C. Nielsen Company
    Inventor: Roy A. Stewart