Inventor · Ankeny, IA, US

Philip Eugene Ferree

11Patents
7h-index
14Co-inventors
63Inventor score

Filing activity: Jul 16, 1997 → Jan 22, 2025

Most-cited inventions

PatentTitleAreaCited byStatus
US7017327B2 Hybrid electric tool carrier Emerging Cross-Sectional Technologies 98 Expired
US6904985B2 Transmission control device for vehicles and steering assembly for vehicles Performing Operations; Transporting 58 Expired
US5927055A Pivoting mower deck mechanism Emerging Cross-Sectional Technologies 53 Expired
US7721517B2 Hybrid electric tool carrier Emerging Cross-Sectional Technologies 37 Active
US8056653B2 Hybrid electric tool carrier Emerging Cross-Sectional Technologies 29 Active
US6681553B2 Mower cutting chamber Human Necessities 19 Expired
US7249449B2 Conveying duct pressure monitor system for controlling harvester speed Human Necessities 11 Expired
US8073599B2 Conveying duct monitor system for controlling harvester speed Human Necessities 7 Active
USD1066426S1 Boom truss panel for agricultural machine General 1 Active
USD1089326S1 Boom for agricultural machine General 0 Active
US12133521B2 Fiber composite truss panel spray boom Performing Operations; Transporting 0 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.