Inventor · Fremont, CA, US

Dehua Han

20Patents
8h-index
42Co-inventors
71Inventor score

Filing activity: Sep 14, 2001 → May 20, 2015

Most-cited inventions

PatentTitleAreaCited byStatus
US8582241B1 Method and system for providing a magnetic transducer having a high moment bilayer magnetic seed layer for a trailing shield Physics 197 Active
US8582238B1 Systems and methods for providing perpendicular magnetic writers having gradient magnetic moment side shields Physics 170 Active
US8724259B1 Conformal high moment side shield seed layer for perpendicular magnetic recording writer Physics 162 Active
US8441756B1 Method and system for providing an antiferromagnetically coupled writer Physics 150 Active
US8760819B1 Magnetic recording sensor with sputtered antiferromagnetic coupling trilayer between plated ferromagnetic shields Physics 140 Active
US9042051B2 Gradient write gap for perpendicular magnetic recording writer Physics 20 Active
US6801409B2 Read head shield having improved stability Emerging Cross-Sectional Technologies 17 Expired
US8810964B2 Magnetic recording head having a pole tip shield and a pole-shield gap region Physics 11 Active
US7609478B2 Magnetic writer pole with a graded magnetic moment Physics 8 Active
US9123359B1 Magnetic recording transducer with sputtered antiferromagnetic coupling trilayer between plated ferromagnetic shields and method of fabrication Physics 7 Active
US8279562B2 Magnetic recording head with magnetic wall angle Emerging Cross-Sectional Technologies 7 Active
US8970992B2 Write head with modified side shields Physics 6 Active
US9123358B1 Conformal high moment side shield seed layer for perpendicular magnetic recording writer Physics 4 Active
US8537501B2 Write head with modified side shields Physics 4 Active
US9135930B1 Method for fabricating a magnetic write pole using vacuum deposition Physics 4 Active
US9214166B1 Gradient write gap for perpendicular magnetic recording writer Physics 2 Active
US8564906B2 Pole tip shield shaped to provide a differential shielding effect alongside the magnetic pole tip Emerging Cross-Sectional Technologies 2 Active
US9368134B1 Method and system for providing an antiferromagnetically coupled writer Physics 0 Active
US9052269B1 Methods for characterizing relative film density using spectroscopic analysis at the device level Physics 0 Active
US8837081B1 Laminated touchdown sensor for hard disk drives Physics 0 Active

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