Inventor · disambiguated record
John D. Hakanson
Also filed as: HAKANSON JOHN D
3 granted patents·51 citations·filing 1974–1986
71Inventor score
Files withMINNESOTA MINING & MFG3
Top patents by PatentIndex Score
3 records- 0180US3978520AMagnetic head cleaning tape and methodMINNESOTA MINING & MFG·Filed 1974·Granted Aug 31, 1976·22 cites·7 claims
- 0270US4570197AStatic reduction in magnetic recording cassettesMINNESOTA MINING & MFG·Filed 1983·Granted Feb 11, 1986·26 cites·20 claims
- 0325US4722017AStatic reduction in magnetic record disk assembliesMINNESOTA MINING & MFG·Filed 1986·Granted Jan 26, 1988·3 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →