Inventor · San Jose, CA, US

Yanning Liu

49Patents
20h-index
48Co-inventors
85Inventor score

Filing activity: Jun 8, 2001 → Mar 5, 2024

Most-cited inventions

PatentTitleAreaCited byStatus
US8144419B1 Disk drive detecting head touchdown from microactuator signal Physics 137 Active
US8605384B1 Disk drive performing lifetime logging of microactuator sensitivity Physics 110 Active
US8300348B1 Disk drive detecting disk boundaries using microactuator Physics 110 Active
US8339748B2 Suspension assembly having a microactuator bonded to a flexure Physics 94 Active
US8542465B2 Suspension assembly having a microactuator electrically connected to a gold coating on a stainless steel surface Physics 93 Active
US8325446B1 Disk drive head gimbal assembly having a flexure tail with features to facilitate bonding Electricity 65 Active
US8320084B1 Disk drive head gimbal assembly having a flexure tail with features to facilitate bonding Physics 61 Active
US8665567B2 Suspension assembly having a microactuator grounded to a flexure Physics 58 Active
US8295014B1 Disk drive head gimbal assembly having a flexure tail with transverse flying leads Emerging Cross-Sectional Technologies 54 Active
US8499652B1 Test ramp for testing microactuators used in a multi-head disk drive Physics 49 Active
US8208224B1 Suspension assemblies for minimizing stress on slider solder joints Physics 49 Active
US8760814B1 Disk drive head suspension assembly having a DLC coating between dimple and tongue Physics 47 Active
US8760812B1 Disk drive head gimbal assembly having a jumper in a flexible printed circuit overlap region Electricity 47 Active
US8797689B1 Disk drive head suspension assembly with piezo element stress relief features Physics 47 Active
US8780504B1 Disk drive head suspension assembly with load beam inner rails between piezo actuator elements Physics 47 Active
US8792213B1 Tethered gimbal on suspension for improved flyability Physics 43 Active
US8693144B1 Head gimbal assemblies and methods for measuring slider parameters Physics 37 Active
US8335049B1 Disk drive detecting crack in microactuator Physics 36 Active
US8605383B1 Methods, devices and systems for characterizing polarities of piezoelectric (PZT) elements of a two PZT element microactuator Physics 23 Active
US8547657B1 Disk drive detecting defective microactuator Physics 22 Active
US7203019B1 Latch apparatus for latching an actuator arm assembly in a disk drive Physics 10 Expired
US9330695B1 Disk drive head suspension tail with a noble metal layer disposed on a plurality of structural backing islands Emerging Cross-Sectional Technologies 8 Active
US6598717B1 Active-passive hybrid constrained layer for structural damping augmentation Mechanical Engineering; Lighting; Heating 5 Expired
US11456009B1 Shared disk configuration in a multiple actuator hard disk drive Physics 5 Active
US8908332B2 Suspension assembly having a microactuator grounded to a flexure Physics 5 Active

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