Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
CE

Charles Elkan — 5 Patents

Amazon: 3 patents #5,214 of 19,158Top 30%
University of California: 1 patents #8,022 of 18,278Top 45%
Goldman Sachs: 1 patents #186 of 353Top 55%
San Diego, CA: #7,328 of 23,606 inventorsTop 35%
California: #107,996 of 386,348 inventorsTop 30%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Charles Elkan has been granted 5 US patents while listed as an inventor at Amazon. The first was granted in 2007 and the most recent in October 2023. Charles Elkan ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Charles Elkan in San Diego, CA, US.

Patents per Year

Patents granted per year, 2007 to 2023Bar chart with a peak of 2 patents in 2023.peak 22007: 1 patents20072020: 1 patents20202021: 1 patents20212023: 2 patents2023

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11797769 Artificial intelligence system using hybrid technique for task-oriented dialog management Rashmi Gangadharaiah, Balakrishnan Narayanaswamy 2023-10-24 $217,954,000
11593885 Regularization-based asset hedging tool Dimitrios Tsementzis, Matthew William Turk, James Dunworth-Crompton 2023-02-28 $242,744,000
10963819 Goal-oriented dialog systems and methods Rashmi Gangadharaiah, Balakrishnan Narayanaswamy 2021-03-30 $248,249,000
10860629 Task-oriented dialog systems utilizing combined supervised and reinforcement learning Rashmi Gangadharaiah, Balakrishnan Narayanaswamy 2020-12-08 $209,909,000
7200606 Method and system for selecting documents by measuring document quality 2007-04-03