Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method and apparatus for providing a personal locator, access control and asset tracking service using an in-building telephone network

Method and apparatus for providing a personal locator, access control and asset tracking service using an in-building telephone network

US Patent 5363425 · Granted Nov 8, 1994

Estimated economic value: $16,922,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

System and method of aggregating and interpreting data from connected devices2023
System and method for a semantically-driven smart data cache2023
System and method for sensing occupancy of an aerial lift device2022
System and method for a semantically-driven smart data cache2021
System and method for automatic tool tracking, monitoring, and inventory managem2020
Systems and methods for controlling business processes through information techn2019
Comprehensive worksite and transportation safety system2017
Neighbor cell interference estimation2016
Half duplex frequency division duplex scheduling2010
Method for synchronous encryption over a communication medium2005
Method for seamless port capability for an alternative service provider2005
Method and apparatus for remote unit passivation2003