Inventor record

CAMPBELL JOHN E

This page previously combined 4different people who filed under the same name. Pick the inventor you're looking for — each profile now covers one disambiguated person.

• 99John E. Campbell70 patent records·3,536 citations·E21B G06F H10P58 on this record
• 86John E. Campbell11 patent records·144 citations·B60R B05B G08B9 on this record
• 98John Emmerson Campbell81 patent records·299 citations·C07D A61P A61K3 on this record
• 90Paul R. Hughes12 patent records·405 citations·G06Q H04L G08B1 on this record

Inventor identities via PatentsView disambiguation — see methodology.