AT & T Wireless
Patent Owner
Stats
- 4 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Feb 22, 2005 most recent publication
Details
- 4 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 228 Total Citation Count
- Oct 08, 1996 Earliest Filing
- 2 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
Rank in Class
Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
5923700 Adaptive weight update method and system for a discrete multitone spread spectrum communications systemFeb 24, 97Jul 13, 99[H04B, H04K]
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
6707894 Prepaid calling time processing: a method and apparatus for processing pre-paid calling time in a telephone communication systemExpiredMay 24, 00Mar 16, 04[H04M]
5875398 Method and apparatus for testing cellular services in a first location from a second location remote from the first locationExpiredOct 21, 96Feb 23, 99[H04M, H04Q, H04B]
Top Inventors for This Owner
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