1
Frederick W LeBlanc, Dennis J Dupray, Charles L Karr: Location of a mobile station using a plurality of commercial wireless infrastructures. TracBeam, Dennis J Dupray, May 22, 2001: US06236365 (702 worldwide citation)

A location system for commercial wireless telecommunication infrastructures (CMRRs). The system is an end-to-end solution having one or more location systems (


2
Dennis J Dupray: Wireless location using multiple location estimators. TracBeam, Dennis J Dupray, June 19, 2001: US06249252 (659 worldwide citation)

A location system is disclosed for commercial wireless telecommunication infrastructures. The system is an end-to-end solution having one or more location centers for outputting requested locations of commercially available handsets or mobile stations (MS) based on, e.g., CDMA, AMPS, NAMPS or TDMA c ...


3
Louise A Stilp, Curtis A Knight, John C Webber: Cellular telephone location system. Associated RT, Woodcock Washburn Kurtz Mackiewicz & Norris, July 5, 1994: US05327144 (598 worldwide citation)

A cellular telephone location system for automatically recording the location of one or more mobile cellular telephones comprises three or more cell site systems 12. Each cell site system is located at a cell site of a cellular telephone system. Each cell site system includes an antenna that may be ...


4
Brett B Stewart, James W Thompson: Geographic-based communication service system with more precise determination of a user's known geographic location. Wayport, Jeffrey C Hood, Conley Rose & Tayon PC, July 2, 2002: US06414635 (539 worldwide citation)

A geographic based communications service system that includes a network and a plurality of access points connected to the network and arranged at known locations in a geographic region. One or more service providers or information providers may be connected to the network to provide services or inf ...


5
Brett B Stewart, James Thompson: Geographic based communications service. Wayport, Jeffrey C Hood, Conley Rose & Tayon PC, July 10, 2001: US06259405 (523 worldwide citation)

A geographic based communications service system that includes a network and a plurality of access points connected to the network and arranged at known locations in a geographic region. One or more service providers or information providers may be connected to the network to provide services or inf ...


6
Alan C Heller: Location system adapted for use in multipath environments. Baker & Botts, June 2, 1992: US05119104 (506 worldwide citation)

A radiolocation system for multipath environments, such as for tracking objects in a semiconductor fabrication facility (FIGS. 1a-1b), includes an array of receivers (20) distributed within the tracking area, coupled to a system processor (40) over a LAN. A TAG transmitter (30) located with each obj ...


7
Bruce D Elliot: Anytime/anywhere child locator system. MCI Communications Corporation, June 5, 2001: US06243039 (493 worldwide citation)

A system that tracks the current and historical locations of a GPS locator device carried by a person provides widely available access to data referencing these locations, so that a parent can easily and frequently monitor the location of a child. Monitoring of a child's location may be conduct ...


8
Neil A Rimer: System for locating and communicating with mobile vehicles. Wolf Greenfield & Sacks, July 11, 1995: US05432841 (489 worldwide citation)

A vehicle location system which provides a plurality of cellular systems that each includes a memory for identifying the cellular subscriber stations that are based in the particular system and visiting cellular subscriber stations based in another of the systems. The plurality of cellular systems i ...


9
Han L Song: Vehicle locating and navigating system. Lerner David Littenberg Krumholz & Mentlik, May 4, 1993: US05208756 (478 worldwide citation)

A vehicle locating and navigating system operating in conjunction with a cellular telephone network is provided. A small, hidden device located in a vehicle is activated through DTMF signals transmitted from any telephone station. Upon activation, the device determines the power at which normally tr ...


10
Louis H M Jandrell: Communication system and method for determining the location of a transponder unit. Pinpoint Communications, Arnold White & Durkee, November 15, 1994: US05365516 (456 worldwide citation)

A multilaterating two-way message delivery system for mobile resource management provides efficient two-way radio data communication for multitudes of portable transponders using a single frequency in half-duplex communication. The system includes at least one transponder device which transmits and ...