Patent · US Active

Method and apparatus to detect a stale number

US9832309B2 · kind B2 · utility

0Cited by

6References

20Claims

0Family size

Assignee

MOTOROLA SOLUTIONS, INC. · US

Inventors

Xun Fei · Chengdu, CN
Dajun Chen · Nanhu, CN
Yong Tian · Chengdu, CN
Hongxia Wang · Thompson Drive, CN

Key dates

Filing date	Jul 5, 2015
Grant date	Nov 28, 2017
Priority date	—
Expiry date	Jul 5, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH04M2242/22
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A method and apparatus for detecting a stale number. A stale number detection device obtains a call number, a call number contact creation date, and a call number issue date for the call number. The stale number detection device determines that a stale number state exists when the call number issue date is later than the call number contact creation date. The stale number detection device generates a stale number notification based on the stale number state.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.