Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
HC

Helen Chu

ATAT&T: 2 patents #7,280 of 18,772Top 40%
New York, NY: #7,895 of 20,192 inventorsTop 40%
New York: #48,759 of 115,490 inventorsTop 45%
Overall (All Time): #2,270,616 of 4,157,543Top 55%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

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