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

Ralph K. DuBose

Houston, TX: #8,651 of 21,073 inventorsTop 45%
Texas: #52,441 of 125,132 inventorsTop 45%
Overall (All Time): #2,281,832 of 4,157,543Top 55%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5560443 Hovercraft having segmented skirt which reduces plowing 1996-10-01
5386880 Self-propelled ground effect machine 1995-02-07