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

Dianna D. Liu — 7 Patents

ATArix Technologies: 7 patents #3 of 10Top 30%
Jackson, LA: #1 of 9 inventorsTop 15%
Louisiana: #945 of 10,876 inventorsTop 9%
Overall (All Time): #696,426 of 4,157,543Top 20%
7 Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
12038395 Radiography inspection and fail-safe mechanism for pipe traversing robots Bryan R. Duerfeldt, Conner S. George, Karl Petter Wehlin 2024-07-16
11826916 Pipe traversing apparatus, sensing, and controls Karl Petter Wehlin, Bryan R. Duerfeldt, Conner S. George, Hassan Zargarzadeh 2023-11-28
11754514 Radiography inspection and fail-safe mechanism for pipe traversing robots Bryan R. Duerfeldt, Conner S. George, Karl Petter Wehlin 2023-09-12
11732832 Pipe traversing apparatus and methods Karl Petter Wehlin, Bryan R. Duerfeldt, Gary Van Deursen, Timothy D. Foldy-Porto 2023-08-22
11154989 Pipe traversing apparatus, sensing, and controls Karl Petter Wehlin, Bryan R. Duerfeldt, Conner S. George, Hassan Zargarzadeh 2021-10-26
10914417 Pipe traversing apparatus and methods Karl Petter Wehlin, Bryan R. Duerfeldt, Gary Van Deursen, Timothy D. Foldy-Porto 2021-02-09
10465835 Pipe traversing apparatus and methods Karl Petter Wehlin, Bryan R. Duerfeldt, Gary Van Deursen, Timothy D. Foldy-Porto 2019-11-05