Inventor

JOHNSON ROY F

US3 patents

⚠️ This page may combine multiple inventors who share the name “JOHNSON ROY F”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ECOLAB INC

2 patents

US6131774AOct 17, 2000

Flowable material dispenser with automatic shutoff and vessel for receiving flowable material

ECOLAB INC58 citations94

US6675840B2Jan 13, 2004

Fill probe with in-line mixer

ECOLAB INC2 citations59

JOHNSON ROY F

1 patent

US7213821B1May 8, 2007

Expandable cart apparatus

JOHNSON ROY F9 citations63