HONGCHAO TIM ZHAO

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SAN JOSE, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Data storage device pre-biasing a spin torque oscillator prior to a...
- Patent number 10,410,656
- Issue date Sep 10, 2019
- Western Digital Technologies, Inc.
- Guoxiao Guo
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive selecting a global digital-to-analog setting for a plura...
- Patent number 8,780,473
- Issue date Jul 15, 2014
- Western Digital Technologies, Inc.
- Hongchao T. Zhao
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive detecting touchdown event by evaluating frequency respon...
- Patent number 8,699,173
- Issue date Apr 15, 2014
- Western Digital Technologies, Inc.
- Soo-Choon Kang
- G11 - INFORMATION STORAGE
Information Patent Grant
Adaptive threshold for detecting touchdown or contamination
- Patent number 8,665,546
- Issue date Mar 4, 2014
- Western Digital Technologies, Inc.
- Hongchao Tim Zhao
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive to reduce head instability
- Patent number 7,974,039
- Issue date Jul 5, 2011
- Western Digital Technology, Inc.
- Jianfeng Xu
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive servoing off of first head while determining fly height...
- Patent number 7,630,162
- Issue date Dec 8, 2009
- Western Digital Technologies, Inc.
- Hongchao Tim Zhao
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
DISK DRIVE SERVOING OFF OF FIRST HEAD WHILE DETERMINING FLY HEIGHT...
- Publication number 20090195936
- Publication date Aug 6, 2009
- WESTERN DIGITAL TECHNOLOGIES, INC.
- HONGCHAO TIM ZHAO
- G11 - INFORMATION STORAGE