Patent · US Expired

Presence tracking and name space interconnection techniques

US7536437B2 · kind B2 · utility

144Cited by
86References
15Claims
0Family size

Assignee

Inventor

Key dates

Filing dateFeb 14, 2003
Grant dateMay 19, 2009
Priority date
Expiry dateJan 28, 2025

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04W88/14
  • WIPO fieldDigital communication
  • WIPO sectorElectrical engineering

Abstract

The present invention is directed to a presence and availability system including:

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