Inventor · disambiguated record
Douglas S. Spencer
Also filed as: SPENCER DOUGLAS S
4 granted patents·300 citations·filing 1987–1999
83Inventor score
Top patents by PatentIndex Score
4 records- 0194US4773920ACoated abrasive suitable for use as a lapping materialMINNESOTA MINING & MFG·Filed 1987·Granted Sep 27, 1988·145 cites·14 claims
- 0285US5551961AAbrasive articles and methods of making sameMINNESOTA MINING & MFG·Filed 1995·Granted Sep 3, 1996·55 cites·29 claims
- 0380US6207246B1Nonwoven abrasive material roll3M INNOVATIVE PROPERTIES CO·Filed 1999·Granted Mar 27, 2001·62 cites·18 claims
- 0476US5368618AMethod of making a coated abrasive articleMINNESOTA MINING & MFG·Filed 1992·Granted Nov 29, 1994·38 cites·41 claims
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