Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Robbyn L. Engen — 2 Patents

3M: 2 patents #5,326 of 11,543Top 50%
River Falls, WI: #103 of 221 inventorsTop 50%
Wisconsin: #17,084 of 40,088 inventorsTop 45%
Overall (All Time): #2,268,817 of 4,157,543Top 55%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5611825 Abrasive articles and methods of making same Jeffrey E. Ford 1997-03-18
5551961 Abrasive articles and methods of making same Douglas S. Spencer, Jeffrey E. Ford 1996-09-03