The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 31, 2021
Filed:
May. 31, 2019
Timekeeping Systems, Inc., Solon, OH (US);
Paolo Argentieri, Signal Hill, CA (US);
Nicholas F. Papatonis, Cuyahoga Falls, OH (US);
John E. Hansley, II, Auburn, OH (US);
Roger W. Stahl, Mantua, OH (US);
John W. Hoffman, Mentor, OH (US);
Jason D. Doyle, Mantua, OH (US);
Barry J. Markwitz, Solon, OH (US);
Dean M. Chriss, Euclid, OH (US);
TIMEKEEPING SYSTEMS, INC., Solon, OH (US);
Abstract
A tracking system that tracks persons and/or objects of interest without the need for triangulation techniques is disclosed. The tracking system utilizes very low power active radio frequency tags with limited effective broadcast range that operate only in the transmit mode with no need to establish two-way communication with any part of the system. The person or object of interest is provided with a radio frequency tag incorporating a unique identifier. Gateways connected to a common network interface are positioned relative to specific areas within the facility to be monitored. A computer connected to the same network as the gateways analyzes data relating to the strength of the of the radio frequency signals received by the radio frequency receivers from the radio frequency tags to determine if, and when, persons and/or objects of interest are present within particular subareas within the facility.