Inventor · disambiguated record
Roger J. Simpson
Also filed as: SIMPSON ROGER J · SIMPSON ROGER J M
3 granted patents·27 citations·filing 1979–1995
69Inventor score
Top patents by PatentIndex Score
3 records- 0136US4293307AMethod and apparatus for analyzing liquidSAINT PETERS RES TRUST LTD·Filed 1979·Granted Oct 6, 1981·10 cites·14 claims
- 0228US5479672AFloor cleaning and polishing equipmentLEVER IND COMPANY DIVISION OF·Filed 1994·Granted Jan 2, 1996·6 cites·4 claims
- 0327US5626596ATool support assembly with bidirectional position controlQUESTUS CORP·Filed 1995·Granted May 6, 1997·11 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →