RD

Ronald O. Zembke, deceased

3M: 1 patents #7,233 of 11,543Top 65%
📍 White Bear Lake, MN: #358 of 561 inventorsTop 65%
🗺 Minnesota: #32,449 of 52,454 inventorsTop 65%
Overall (All Time): #3,778,266 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5443906 Abrasive filaments comprising abrasive-filled thermoplastic elastomer, methods of making same, articles incorporting same and methods of using said articles Richard M. Pihl, Duane J. Hayes, Loren L. Barber, Jr., Dennis G. Welygan, R. Eugene Hardwick 1995-08-22