HC

Helen Chu

AT AT&T: 2 patents #7,280 of 18,772Top 40%
Overall (All Time): #2,270,616 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5633868 Virtual circuit management in cellular telecommunications John H. Baldwin, Bharat Tarachand Doshi, Subrahmanyam Dravida, Sanjiv Nanda, Philip Andrew Treventi 1997-05-27
5539744 Hand-off management for cellular telephony Bharat Tarachand Doshi, Subrahmanyam Dravida, Sanjiv Nanda, Anil S. Sawkar, Kazem Anaraky Sohraby 1996-07-23