Inventor · disambiguated record
Roy F. Johnson
Also filed as: JOHNSON ROY F
3 granted patents·69 citations·filing 1998–2004
70Inventor score
Top patents by PatentIndex Score
3 records- 0184US6131774AFlowable material dispenser with automatic shutoff and vessel for receiving flowable materialECOLAB INC·Filed 1998·Granted Oct 17, 2000·58 cites·20 claims
- 0247US7213821B1Expandable cart apparatusJOHNSON ROY F·Filed 2004·Granted May 8, 2007·9 cites·6 claims
- 0346US6675840B2Fill probe with in-line mixerECOLAB INC·Filed 2001·Granted Jan 13, 2004·2 cites·26 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →