Inventor · disambiguated record
Douglas K. Fossum
Also filed as: FOSSUM DOUGLAS K
5 granted patents·534 citations·filing 1989–1999
87Inventor score
Top patents by PatentIndex Score
5 records- 0196US5169707ARetroreflective security laminates with dual level verificationMINNESOTA MINING & MFG·Filed 1991·Granted Dec 8, 1992·178 cites·18 claims
- 0293US5683774ADurable, tamper resistant security laminateMINNESOTA MINING & MFG·Filed 1996·Granted Nov 4, 1997·144 cites·17 claims
- 0391US5060981ATransparent overlay for protecting a document from tamperingMINNESOTA MINING & MFG·Filed 1989·Granted Oct 29, 1991·61 cites·16 claims
- 0490US4968063ATransparent tamper-indicating document overlayMINNESOTA MINING & MFG·Filed 1989·Granted Nov 6, 1990·79 cites·11 claims
- 0582US6284337B1Durable security laminate with heat-shrinkable layer3M INNOVATIVE PROPERTIES CO·Filed 1999·Granted Sep 4, 2001·72 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →