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

David Hulbert — 4 Patents

MIMintek: 3 patents #1 of 37Top 3%
DRDryair: 1 patents #3 of 4Top 75%
Randburg, ID: #1 of 1 inventorsTop 100%
Overall (All Time): #1,117,902 of 4,157,543Top 30%
4 Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
12135167 Grain drying auger and drum with air holes Devon John McDonald 2024-11-05
5575303 Process for controlling a series of flotation cells 1996-11-19
5248442 Method and apparatus for measuring shade of hydrocyclone underflow 1993-09-28
5132024 Hydro-cyclone underflow monitor based on underflow slurry stream shape 1992-07-21