Inventor · Longmont, CO, US

Frederick M. Stefansky

41Patents
23h-index
21Co-inventors
81Inventor score

Filing activity: Jan 25, 1988 → Mar 22, 2002

Most-cited inventions

PatentTitleAreaCited byStatus
US5025335A Architecture for 21/2 inch diameter single disk drive Emerging Cross-Sectional Technologies 185 Expired
US4965684A Low height disk drive Emerging Cross-Sectional Technologies 118 Expired
US5404636A Method of assembling a disk drive actuator Emerging Cross-Sectional Technologies 90 Expired
US6094342A Disk drive jacket Physics 90 Expired
US6297936A Integral load beam push-pull microactuator Physics 90 Expired
US6320730A Low-stress disc drive microactuator cradle Physics 75 Expired
US5170300A Magnetic parking device for disk drive Physics 55 Expired
US4979062A Disk drive architecture Physics 50 Expired
US6295185A Disc drive suspension having a moving coil or moving magnet microactuator Physics 49 Expired
US6636388B2 Disc drive suspension having a moving coil or moving magnet microactuator Physics 48 Expired
US5029026A Disk drive architecture Physics 46 Expired
US6215629A Unitary synchronous flexure microactuator Physics 45 Expired
US5532889A Winchester drive card including an actuator arm body, actuator arm plates, and a VCM magnet external to a controlled environment Physics 45 Expired
US5329412A Two and one half inch diameter disk drive having 0.6 inch height Physics 38 Expired
US5844754A Stackable actuator assembly having spring retaining system Physics 34 Expired
US5477401A Magnet shield for disk drive Emerging Cross-Sectional Technologies 32 Expired
US5157295A Under-the-hub disk drive spin motor Electricity 31 Expired
US6222706A Flexure microactuator Physics 30 Expired
US6426847B1 Over-molded base plate and method of manufacture of over-molded base plate for a disc drive Physics 30 Expired
US5216662A Latch mechanism for disk drives Physics 26 Expired
US5808830A Architecture for 2-1/2 inch diameter single disk drive Physics 25 Expired
US5041934A Actuator for disk drive Physics 24 Expired
US6417988B1 Disc clamp for a disc drive Physics 23 Expired
US6519110B2 Disk drive pass-through connector Physics 23 Expired
US6567238B1 Disc clamp for a disc drive Physics 21 Expired

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