1
Hoyt M Layson Jr: Portable tracking apparatus for continuous position determination of criminal offenders and victims. Pro Tech Monitoring, Herbert W Larson, Larson & Larson P A, March 24, 1998: US05731757 (378 worldwide citation)

A portable locator or tracking apparatus is provided for continuous location determination of subjects which communicates with a body-worn, non-removable, tamper resistant transceiver and a central data-base system. The portable tracking apparatus has a Global Position System (GPS) receiver and iner ...


2
Hoyt M Layson Jr: Body worn active and passive tracking device. Pro Tech Monitoring, James E Larson, Larson & Larson P A, January 11, 2000: US06014080 (202 worldwide citation)

Tamper resistant body-worn tracking device to be worn by offenders or potential victims for use in a wireless communication system receiving signals from a global positioning system (GPS). The tracking device directly communicates spacial coordinates to multiple remote sites. The tracking device is ...


3
Hoyt M Layson Jr: Offender and victim collision avoidance and advanced warning system. Pro Tech Monitoring, James E Larson, Larson & Larson P A, November 9, 1999: US05982281 (153 worldwide citation)

A redundant system is provided for simultaneously notifying a victim about the approach of an offender when a message is sent to a central data base. The system includes multiple communication paths and assured message delivery. The offender's portable tracking apparatus is equipped with a memory ca ...


4
Hoyt M Layson Jr, David S Segal, Peter Lefferson: Tamper detection for body worn transmitter. Pro Tech Monitoring, James E Larson, Larson & Larson P A, September 28, 1999: US05959533 (73 worldwide citation)

A body worn transmitter and its associated portable monitoring receiver receiving global position signals, is provided with tamper detection to support twenty-four hour violation reporting from a subject under community supervision moves about the community. The body worn transmitter incorporates ac ...


5
Hoyt M Layson Jr: Location derived messaging system. December 10, 2013: US08606865 (2 worldwide citation)

The invention disclosed relates to the end to end system, the methods and apparatuses for delivering message content from publishers to recipients, such recipients being comprised of subscribers and non subscribers, based on the geospatial location of the recipients using a plurality of devices, sta ...


6
Hoyt M Layson JR: Location Derived Messaging System. August 4, 2011: US20110191432-A1

The invention disclosed relates to the end to end system, the methods and apparatuses for delivering message content from publishers to recipients, such recipients being comprised of subscribers and non subscribers, based on the geospatial location of the recipients using a plurality of devices, sta ...


7
Hoyt M Layson JR, Alceu Aragao: Flame, Heat and Electric Arc Protective Yarn and Fabric. June 16, 2011: US20110138523-A1

This invention relates to flame, heat and electric arc protective yarn that can be used for knitting and weaving a single layer fabric. Both knitted and woven fabrics are for use as a single layer flame, heat and electric arc protective fabric garment or as an outer layer of a flame, heat and electr ...