Inventor · disambiguated record
John F. Simpson
Also filed as: SIMPSON JOHN · SIMPSON JOHN F · SIMPSON JR JOHN F
4 granted patents·1 pending application·45 citations·filing 1981–2004
75Inventor score
Top patents by PatentIndex Score
5 records- 0173US4405050AQuick roll adjustment for a roller screen conveyorDRAVO CORP·Filed 1981·Granted Sep 20, 1983·29 cites·21 claims
- 0254USD277595SSwim finSIMPSON JOHN F·Filed 1983·Granted Feb 12, 1985·7 cites·1 claims
- 0351USD270926SSwim finSIMPSON JOHN F·Filed 1981·Granted Oct 11, 1983·6 cites·1 claims
- 0435US2006157614A1Wing for a compound helicopterSIMPSON JOHN·Filed 2004·Application pending·0 cites
- 0521US5938516AGrinding wheel and method for removal of sprues and riser pads from cast railcar wheelsAMSTED IND INC·Filed 1997·Granted Aug 17, 1999·3 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →