Inventor · Vancouver, BC, CA

John Madden

23Patents
8h-index
29Co-inventors
75Inventor score

Filing activity: May 12, 1977 → Jan 20, 2022

Most-cited inventions

PatentTitleAreaCited byStatus
US6249076A Conducting polymer actuator Emerging Cross-Sectional Technologies 1,710 Expired
US5641391A Three dimensional microfabrication by localized electrodeposition and etching Emerging Cross-Sectional Technologies 225 Expired
US4087630A Continuous speech recognition apparatus Physics 52 Expired
US6084321A Conducting polymer driven rotary motor Mechanical Engineering; Lighting; Heating 50 Expired
US6157113A Conducting polymer generator-actuator with energy storage/recovery Electricity 14 Expired
US10401241B2 Surface sensor arrays using ionically conducting material Human Necessities 12 Active
US6207034A Method of manufacture of polymer transistors with controllable gap Emerging Cross-Sectional Technologies 11 Expired
US10670429B2 Capacitive bending sensors Physics 9 Active
US7138075B2 Molecular actuators, and methods of use thereof Emerging Cross-Sectional Technologies 4 Expired
US10831319B2 Cluster sensor Physics 3 Active
US10663358B2 Method and sensor for pressure sensing based on electrical signal generated by redistribution of mobile ions in piezoionic layer Physics 2 Active
US10229564B2 Apparatus and methods for providing tactile stimulus incorporating tri-layer actuators Mechanical Engineering; Lighting; Heating 2 Active
US7649217B2 Thin film field effect transistors having Schottky gate-channel junctions Electricity 1 Active
US7256529B2 High power-to-mass ratio actuator Electricity 1 Expired
US7432630B2 High power-to-mass ratio actuator Electricity 1 Active
US11740147B2 Triaxial force sensor Physics 0 Active
US12117354B2 Capacitance detection sensor, capacitance detection sensor module and state determination method using capacitance detection sensor Electricity 0 Active
US11898924B2 Deformable sensor for simulating skin and other applications Physics 0 Active
US12414819B2 Hydrogel co-injection and real-time opto-electromagnetic modification device for tunable in-vivo delivery Human Necessities 0 Active
US11740150B2 Electrostatic capacity sensor Physics 0 Active
US7658868B2 Molecular actuators, and methods of use thereof Emerging Cross-Sectional Technologies 0 Active
US11906372B2 Capacitance sensor and measurement device Physics 0 Active
US11788905B2 Capacitance sensor Physics 0 Active

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