Inventor · Buffalo Grove, IL, US

John Qualich

11Patents
7h-index
11Co-inventors
59Inventor score

Filing activity: Jul 6, 1987 → Jan 13, 2004

Most-cited inventions

PatentTitleAreaCited byStatus
US5119265A Semiconductor device protection circuit Emerging Cross-Sectional Technologies 40 Expired
US5959464A Loss-less load current sensing driver and method therefor Electricity 27 Expired
US4774624A Boost voltage power supply for vehicle control system Mechanical Engineering; Lighting; Heating 21 Expired
US4896245A FET overtemperature protection circuit Electricity 19 Expired
US5481175A System and method for charging auxiliary batteries Electricity 18 Expired
US4926283A Temperature protected transistor circuit and method of temperature protecting a transistor Electricity 12 Expired
US7354166B2 Automatic viewing of vehicle blind spot Performing Operations; Transporting 10 Expired
US7999408B2 Power and communication architecture for a vehicle Performing Operations; Transporting 7 Active
US7183896B2 Wake-up circuit Physics 6 Expired
US5793127A Inductive load driver circuit with shared flyback protection Electricity 6 Expired
US5949121A Temperature-indicating field effect transistor Electricity 5 Expired

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