Inventor · Merced, CA, US

Michael Alex

19Patents
11h-index
16Co-inventors
69Inventor score

Filing activity: Sep 12, 1994 → Jul 14, 2021

Most-cited inventions

PatentTitleAreaCited byStatus
US6429984B1 Circuit and method for refreshing data recorded at a density sufficiently high to undergo thermal degradation Physics 115 Expired
US6628466B2 Circuit and method for refreshing data recorded at a density sufficiently high to undergo thermal degradation Physics 102 Expired
US7196860B2 Circuit and method for refreshing data recorded at a density sufficiently high to undergo thermal degradation Physics 87 Expired
US8743666B1 Energy assisted magnetic recording medium capable of suppressing high DC readback noise Physics 64 Active
US8773957B1 Disk drive destabilizing magnetization of test pattern using head laser to enhance defect detection Physics 52 Active
US8446690B2 Perpendicular magnetic recording write head with spin torque oscillator for fast switching of write pole magnetization Physics 51 Active
US8116031B2 Perpendicular magnetic recording system with helical write coil and auxiliary coil for fast switching of write pole magnetization Physics 35 Active
US5616218A Modification and selection of the magnetic properties of magnetic recording media through selective control of the crystal texture of the recording layer Physics 27 Expired
US8189281B2 Magnetic recording disk drive with write driver to write head transmission line having non-uniform sections for optimal write current pulse overshoot Physics 27 Active
US7787201B2 Method and apparatus for controlling fly-height of a perpendicular-magnetic-recording head in a hard disk drive Physics 16 Active
US8897103B2 Disk drive calibrating a laser write power for heat assisted magnetic recording Physics 12 Active
US7633694B2 Method and apparatus for quantifying stress and damage in magnetic heads Physics 7 Active
US9183867B1 Systems and methods for forming implanted capping layers in magnetic media for magnetic recording Physics 2 Active
US9001630B1 Energy assisted magnetic recording medium capable of suppressing high DC readback noise Physics 2 Active
US8116021B2 Synchronized rewriting of data Physics 1 Active
US9183859B1 HAMR writer pole length characterization Physics 1 Active
US9171575B1 Data storage device detecting media defects by writing opposite polarity test pattern Physics 1 Active
US11080621B2 Machine learning-based read channel data detection Electricity 1 Active
US11348037B2 Machine learning-based read channel data detection Electricity 0 Active

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