Inventor · disambiguated record
Frederic A. Longworth
Also filed as: LONGWORTH FREDERIC A
7 granted patents·204 citations·filing 1988–1993
88Inventor score
Files withMINNESOTA MINING & MFG7
Top patents by PatentIndex Score
7 records- 0187US5269871ATape applying deviceMINNESOTA MINING & MFG·Filed 1991·Granted Dec 14, 1993·57 cites·14 claims
- 0281US4981537ATape laminating deviceMINNESOTA MINING & MFG·Filed 1989·Granted Jan 1, 1991·27 cites·6 claims
- 0380US4913767ACut off blade for severing multiple layers of thin polymeric sheet materialMINNESOTA MINING & MFG·Filed 1988·Granted Apr 3, 1990·37 cites·4 claims
- 0472US4915769AMasking machineMINNESOTA MINING & MFG·Filed 1989·Granted Apr 10, 1990·27 cites·7 claims
- 0564US4989769ABlade guardMINNESOTA MINING & MFG·Filed 1989·Granted Feb 5, 1991·25 cites·14 claims
- 0656US4990214AMasking device with tape tracking memberMINNESOTA MINING & MFG·Filed 1990·Granted Feb 5, 1991·19 cites·2 claims
- 0750US5456422ATape applying deviceMINNESOTA MINING & MFG·Filed 1993·Granted Oct 10, 1995·12 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →