Inventor · Minneapolis, MN, US

Michael Thomas Johnson

49Patents
13h-index
68Co-inventors
84Inventor score

Filing activity: Sep 9, 1977 → Jan 13, 2023

Most-cited inventions

PatentTitleAreaCited byStatus
US4964411A Evoked EMG signal processing Human Necessities 320 Expired
US4881526A Intravaginal electrode and stimulation system for controlling female urinary incontinence Human Necessities 126 Expired
US6591250B1 System and method for managing virtual property Physics 69 Expired
US7573682B2 Writer heater for thermal protrusion shape control in a magnetic writer Physics 47 Active
US4973303A pH buffered electrode for medical iontophoresis Human Necessities 32 Expired
US4480833A Amusement game Human Necessities 30 Expired
US9202499B2 Contact detection using laser modulation Physics 27 Active
US5263489A Relative electromyographic muscle reflex activity during motion Human Necessities 24 Expired
US8995076B1 Head-medium contact detection using electromagnetic attraction Physics 17 Active
US6025616A Power distribution system for semiconductor die Emerging Cross-Sectional Technologies 16 Expired
US8837070B1 Capacitive clearance detection for a magnetic head Physics 13 Active
US7895930B2 Weapon mount Mechanical Engineering; Lighting; Heating 13 Active
US8176808B2 Robot arm assembly Emerging Cross-Sectional Technologies 13 Active
US9685182B1 Non-contact laser-induced protrusion measurement apparatus and method Physics 12 Active
US7677587B2 Trailer and hitch mechanism for a robot Performing Operations; Transporting 12 Active
US9153276B2 Laser optical power monitoring using thermal sensor of a head transducer Physics 11 Active
US8873352B1 Light mitigation layer between write pole and waveguide Physics 11 Active
USD348934S Incontinence electrode General 9 Expired
US4159016A Freestanding fireplace stove with cooking means Mechanical Engineering; Lighting; Heating 8 Expired
US9916847B1 Magnetic recording device capable of detecting contamination buildup at a head-disk interface Physics 6 Active
US8730611B2 Contact detection Physics 6 Active
US9858953B1 Method of removing head contamination during contact detection Physics 5 Active
US7560971B2 Level shift circuit with power sequence control Electricity 5 Active
US8810952B2 Head transducer with multiple resistance temperature sensors for head-medium spacing and contact detection Physics 5 Active
US9390741B2 Head transducer with multiple resistance temperature sensors for head-medium spacing and contact detection Physics 4 Active

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