Mobile telephone having antitheft operation and methods thereof
US6542731B1 · kind B1 · utility
10Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 2, 1999 |
| Grant date | Apr 1, 2003 |
| Priority date | — |
| Expiry date | Aug 2, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An antitheft method for a mobile telephone for a cellular network comprises: assigning a provisional identity number to the mobile telephone before a definitive identity number is assigned to the mobile telephone; counting the cumulative duration of operation as long as the definitive identity number has not been assigned; and disabling the operation of the mobile telephone when the cumulative duration of operation reaches a time limit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.