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

Lou Dafu — 1 Patent

BCBce: 1 patents #85 of 182Top 50%
Ottawa, CA: #3,729 of 6,399 inventorsTop 60%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
Lou Dafu has been granted 1 US patent while listed as an inventor at Bce. All of these patents were granted in 2016. Lou Dafu ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Lou Dafu in Ottawa, ON, CA.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9454657 Security access device and method Tet Hin Yeap, William G. O'Brien 2016-09-27 $141,301,000