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Walter Mason Stewart, Marcelo Carrera, Robert G Hook: E-mail virus protection system and method. Gatekeeper, Sterne Kessler Goldstein & Fox P L L C, March 17, 2009: US07506155 (364 worldwide citation)


A network is protected from e-mail viruses through the use of a sacrificial server. Any executable programs or other suspicious parts of incoming e-mail messages are forwarded to a sacrificial server, where they are converted to non-executable format such as Adobe Acrobat PDF and sent to the recipie ...


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Scott J Carter, Stephen E Hannah, Jesse M James: Navigation systems and methods for wheeled objects. Gatekeeper Systems, Knobbe Martens Olson & Bear, October 25, 2011: US08046160 (45 worldwide citation)


A navigation system uses a dead reckoning method to estimate an object's present position relative to one or more prior positions. In some embodiments, the dead reckoning method determines a change in position from the object's heading and speed during an elapsed time interval. In embodiments suitab ...


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Jeffrey J Lace, Jack Durban: Anti-theft vehicle system. Gatekeeper Systems, Bliss McGlynn & Nolan P C, March 26, 2002: US06362728 (38 worldwide citation)


An anti-theft vehicle system for a vehicle wheel having a rotational axis including a signal generator to generate a first predetermined signal around a first predetermined perimeter and to generate a second predetermined signal around a second predetermined perimeter at least partially disposed wit ...


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Serge Taba: Anti-theft vehicle system. Gatekeeper Systems, Bliss McGlynn P C, September 20, 2005: US06945366 (34 worldwide citation)


An anti-theft vehicle system for a vehicle wheel having a rotational axis includes a linear actuator disposed within the vehicle wheel for operatively engaging and disengaging an interior surface of the vehicle wheel to resist and allow rotational movement of the vehicle wheel about the rotational a ...


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Jack Durban, Jeffrey J Lace: Anti-theft vehicle system. Gatekeeper Systems L L C, Bliss McGlynn P C, October 3, 2000: US06127927 (33 worldwide citation)


An anti-theft vehicle system for a vehicle wheel having a rotational axis includes at least one inhibitor disposed within the vehicle wheel to selectively engage and disengage the vehicle wheel to resist and allow rotational movement of the vehicle wheel about its rotational axis. The anti-theft veh ...


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Stephen William Hunt: System and method for security and electronic article surveillance. Gatekeeper Systems, Pearl Cohen Zedek Latzer, July 8, 2008: US07397373 (30 worldwide citation)


A security system and method of providing security in a retail environment or the like, comprising shopping trolleys associated with the retail enviroment fitted with security devices having a receive-only wireless receiver and a processor. The receiver receiving wireless signals transmitted from on ...


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Scott J Carter, Jesse M James, Stephen E Hannah: Systems and methods for locating and controlling powered vehicles. Gatekeeper Systems, Knobbe Martens Olson & Bear, May 17, 2011: US07944368 (27 worldwide citation)


A system for controlling movement of a personal mobility vehicle near a restricted region is disclosed. In one embodiment, the system includes a detector that is configured to be disposed on the personal mobility vehicle and that is configured to receive an electromagnetic signal transmitted to the ...


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Scott J Carter: Systems and methods for power storage and management from intermittent power sources. Gatekeeper Systems, Knobbe Martens Olson & Bear, February 9, 2010: US07658247 (23 worldwide citation)


A power management system is disclosed. Embodiments of the power management system may be configured for use with an electric generator that produces AC or DC voltage from an energy source, which may be intermittent or fluctuating. One embodiment of the power management system includes an energy sto ...



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