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

Preethi Parasseri Narayanan — 3 Patents in 2016

Amazon: 3 patents #322 of 2,598Top 15%
Cupertino, CA: #249 of 1,508 inventorsTop 20%
California: #7,565 of 57,791 inventorsTop 15%
Overall (2016): #58,784 of 481,213Top 15%
3 Patents 2016

Issued Patents 2016

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
9373318 Signal rate synchronization for remote acoustic echo cancellation Kurt Piersol, Robert Ayrapetian, Arnaud Jean-Louis Charton, Gabe Beddingfield, Michael Alan Pogue +1 more 2016-06-21
9319816 Characterizing environment using ultrasound pilot tones 2016-04-19
9286899 User authentication for devices using voice input or audio signatures 2016-03-15