Inventor · disambiguated record
Ernest J. Duwell
Also filed as: DUWELL ERNEST J
7 granted patents·1,940 citations·filing 1985–1995
91Inventor score
Files withMINNESOTA MINING & MFG7
Top patents by PatentIndex Score
7 records- 0196US4799939AErodable agglomerates and abrasive products containing the sameMINNESOTA MINING & MFG·Filed 1987·Granted Jan 24, 1989·727 cites·22 claims
- 0296US4652275AErodable agglomerates and abrasive products containing the sameMINNESOTA MINING & MFG·Filed 1985·Granted Mar 24, 1987·576 cites·19 claims
- 0393US5078753ACoated abrasive containing erodable agglomeratesMINNESOTA MINING & MFG·Filed 1990·Granted Jan 7, 1992·280 cites·20 claims
- 0491US4705124ACutting element with wear resistant crownMINNESOTA MINING & MFG·Filed 1986·Granted Nov 10, 1987·123 cites·16 claims
- 0587US5578098ACoated abrasive containing erodible agglomeratesMINNESOTA MINING & MFG·Filed 1995·Granted Nov 26, 1996·82 cites·15 claims
- 0684US5454750ACoated abrasive containing erodable agglomeratesMINNESOTA MINING & MFG·Filed 1992·Granted Oct 3, 1995·74 cites·33 claims
- 0783US5045091AMethod of making rotary brush with removable brush elementsMINNESOTA MINING & MFG·Filed 1991·Granted Sep 3, 1991·78 cites·4 claims
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