Inventor · disambiguated record
William F. Sheffield
Also filed as: SHEFFIELD WILLIAM F · SHEFFIELD WILLIAM FRANK
22 granted patents·2 pending applications·1,467 citations·filing 1976–2005
97Inventor score
Top patents by PatentIndex Score
24 records- 0198US5505747AMethod of making an abrasive articleMINNESOTA MINING & MFG·Filed 1994·Granted Apr 9, 1996·265 cites·64 claims
- 0297US6777055B2Protective article having removable sheets and vertically staggered side edge, substrates protected therewith, and a method of use3M INNOVATIVE PROPERTIES CO·Filed 2003·Granted Aug 17, 2004·118 cites·23 claims
- 0397US6461709B1Graffiti and/or environmental protective article having removable sheets, substrates protected therewith, and a method of use3M INNOVATIVE PROPERTIES CO·Filed 1998·Granted Oct 8, 2002·167 cites·31 claims
- 0497US5840089AMethod of making an abrasive articleMINNESOTA MINING & MFG·Filed 1997·Granted Nov 24, 1998·131 cites·52 claims
- 0596US5672186AMethod of making an abrasive articleMINNESOTA MINING & MFG·Filed 1996·Granted Sep 30, 1997·106 cites·32 claims
- 0695US5962102ALoop material for engagement with hooking stems3M INNOVATIVE PROPERTIES CO·Filed 1997·Granted Oct 5, 1999·69 cites·20 claims
- 0793US7044834B2Abrasive article3M INNOVATIVE PROPERTIES CO·Filed 2005·Granted May 16, 2006·15 cites·22 claims
- 0893US6579162B2Abrasive article3M INNOVATIVE PROPERTIES CO·Filed 2000·Granted Jun 17, 2003·39 cites·32 claims
- 0991US5607345AAbrading apparatusMINNESOTA MINING & MFG·Filed 1994·Granted Mar 4, 1997·86 cites·52 claims
- 1089US5667540AMethod of making an abrasive articleMINNESOTA MINING & MFG·Filed 1996·Granted Sep 16, 1997·47 cites·33 claims
- 1188US6491775B1Method of applying a semi-rigid film to a substrate3M INNOVATIVE PROPERTIES CO·Filed 2000·Granted Dec 10, 2002·47 cites·11 claims
- 1287US6884157B2Abrasive article3M INNOVATIVE PROPERTIES CO·Filed 2003·Granted Apr 26, 2005·19 cites·22 claims
- 1386US6482488B1Repaired scratched and/or abraded transparent substrates having protective removable sheets thereon and a method of making3M INNOVATIVE PROPERTIES CO·Filed 1998·Granted Nov 19, 2002·58 cites·20 claims
- 1485US5725423AAbrading apparatusMINNESOTA MINING & MFG·Filed 1997·Granted Mar 10, 1998·43 cites·24 claims
- 1583US5340649AMicrowaveable adhesive article and method of useMINNESOTA MINING & MFG·Filed 1992·Granted Aug 23, 1994·44 cites·17 claims
- 1681US5400460AMicrowaveable adhesive article and method of useMINNESOTA MINING & MFG·Filed 1994·Granted Mar 28, 1995·43 cites·5 claims
- 1779US6579161B1Abrasive article3M INNOVATIVE PROPERTIES CO·Filed 1996·Granted Jun 17, 2003·42 cites·72 claims
- 1876US5692949ABack-up pad for use with abrasive articlesMINNESOTA MINING & MFG·Filed 1995·Granted Dec 2, 1997·45 cites·24 claims
- 1973US4089034AMachine and method for poling films of pyroelectric and piezoelectric materialMINNESOTA MINING & MFG·Filed 1976·Granted May 9, 1978·22 cites·36 claims
- 2073US4079437AMachine and method for poling films of pyroelectric and piezoelectric materialMINNESOTA MINING & MFG·Filed 1976·Granted Mar 14, 1978·22 cites·26 claims
- 2172US6180245B1Method of repairing scratched and/or abraded transparent substrates and the repaired substrates3M INNOVATIVE PROPERTIES CO·Filed 1998·Granted Jan 30, 2001·27 cites·8 claims
- 2263US4067056APoling machine for continuous film of pyroelectric and/or piezoelectric materialMINNESOTA MINING & MFG·Filed 1976·Granted Jan 3, 1978·12 cites·8 claims
- 2352US2003087054A1Graffiti and/or environmental protective article having removable sheets3M INNOVATIVE PROPERTIES CO·Filed 2002·Application pending·0 cites
- 2437US2001000076A1Method of repairing scratched and/or abraded transparent substrates and the repaired substratesFiled 2000·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →