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

Ulrk F. Bierma

IJsselstein, NL: #1 of 4 inventorsTop 25%
Overall (1994): #42,251 of 165,921Top 30%
1 Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5327609 Mopsweeping apparatus with continuous action Dirk M. Both 1994-07-12