Method and apparatus for tracking and monitoring containers
US8319643B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2008 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Aug 31, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A tag can communicate according to a cellular telephone network communication protocol, and includes one of: passive circuitry, semi-passive circuitry, or circuitry capable of communicating according to a radio frequency identification communication protocol or a satellite communication protocol. According to a different aspect, a tag can receive satellite signals containing positioning information, and can transmit according to one of a cellular telephone network communication protocol, a satellite communication protocol, and a wireless computer network communication protocol. According to yet another aspect, a tag can transmit according to each of first and second communication protocols that are each one of a radio frequency identification communication protocol, a cellular telephone network communication protocol, a satellite communication protocol, and a wireless computer network communication protocol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.