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Chun-Jer C. Cheng
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Saratoga, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method for test mounting a head stack assembly cartridge
Patent number
8,544,164
Issue date
Oct 1, 2013
Western Digital Technologies, Inc.
Chunjer Chuck Cheng
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk spindle assembly cartridge
Patent number
8,432,631
Issue date
Apr 30, 2013
Western Digital Technologies, Inc.
Tao Lin
G01 - MEASURING TESTING
Information
Patent Grant
Removable actuator assemblies for testing head gimbal assemblies of...
Patent number
8,339,747
Issue date
Dec 25, 2012
Western Digital Technologies, Inc.
Geoffrey A. Hales
G11 - INFORMATION STORAGE
Information
Patent Grant
Head stack assembly cartridge
Patent number
8,270,118
Issue date
Sep 18, 2012
Western Digital Technologies, Inc.
Chunjer Chuck Cheng
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive having a stationary plate facing a disk and with a recir...
Patent number
8,228,631
Issue date
Jul 24, 2012
Western Digital Technologies, Inc.
Alex Y. Tsay
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk spindle assembly cartridge
Patent number
8,218,256
Issue date
Jul 10, 2012
Western Digital Technologies, Inc.
Tao Lin
G01 - MEASURING TESTING
Information
Patent Grant
Dual-state clamping mechanism
Patent number
8,098,460
Issue date
Jan 17, 2012
Western Digital Technologies, Inc.
Chih-Wu Jen
G11 - INFORMATION STORAGE
Information
Patent Grant
Head gimbal assembly mounting mechanism
Patent number
8,094,414
Issue date
Jan 10, 2012
Western Digital Technologies, Inc.
Chunjer C. Cheng
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive having a top cover with anchor tabs
Patent number
8,031,431
Issue date
Oct 4, 2011
Western Digital Technologies, Inc.
Keith R. Berding
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive having a stationary plate facing a disk and with a recir...
Patent number
7,957,095
Issue date
Jun 7, 2011
Western Digital Technologies, Inc.
Alex Y. Tsay
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive cover having a see-through insert including an electrica...
Patent number
7,605,999
Issue date
Oct 20, 2009
Western Digital Technolgies, Inc.
May C. Kung
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk vibration damper having an integrated air circulation guide
Patent number
7,593,181
Issue date
Sep 22, 2009
Western Digital Technologies, Inc.
Alex Y. Tsay
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive including a balancing element with first and second cavi...
Patent number
7,529,064
Issue date
May 5, 2009
Western Digital Technologies, Inc.
Yao-Hsin Huang
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive including an actuator arm with a region of reduced thick...
Patent number
7,440,234
Issue date
Oct 21, 2008
Western Digital Technologies, Inc.
Chunjer Chuck Cheng
G11 - INFORMATION STORAGE
Information
Patent Grant
Head stack assembly with locking pins for retaining flex cable
Patent number
7,227,725
Issue date
Jun 5, 2007
Western Digital Technologies Inc.
Ken L. Chang
G11 - INFORMATION STORAGE
Information
Patent Grant
Head stack and actuator arm assemblies and disk drives having an ac...
Patent number
7,064,932
Issue date
Jun 20, 2006
Western Digital Technologies, Inc.
Chen-Chi Lin
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive actuator arm assembly having one or more slotted actuato...
Patent number
6,961,218
Issue date
Nov 1, 2005
Western Digital Technologies, Inc.
Chen-Chi Lin
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive having a low inertia and narrow angle coil
Patent number
6,710,981
Issue date
Mar 23, 2004
Western Digital Technologies, Inc.
Kamran Oveyssi
G11 - INFORMATION STORAGE
Information
Patent Grant
Head stack assembly shipping comb with temporary locating feature f...
Patent number
6,687,093
Issue date
Feb 3, 2004
Western Digital Technologies, Inc.
Walter W. Butler
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive including a vibration damping system having a compressib...
Patent number
6,288,866
Issue date
Sep 11, 2001
Western Digital Technologies, Inc.
Walter W. Butler
G11 - INFORMATION STORAGE
Information
Patent Grant
Composite disc spacer for a disc drive
Patent number
6,130,801
Issue date
Oct 10, 2000
Seagate Technology, Inc.
Chunjer C. Cheng
G11 - INFORMATION STORAGE
Information
Patent Grant
Bi-stable mechanical latch for disk drive actuator
Patent number
5,381,290
Issue date
Jan 10, 1995
MiniStor Peripherals International Limited
Chunjer C. Cheng
G11 - INFORMATION STORAGE
Information
Patent Grant
Head arm flexure for disc drives
Patent number
4,933,791
Issue date
Jun 12, 1990
Seagate Technology, Inc.
Chun-Jer C. Cheng
G11 - INFORMATION STORAGE
Information
Patent Grant
Flexure mount for disc drives
Patent number
4,893,205
Issue date
Jan 9, 1990
Seagate Technology, Inc.
Robert F. Hoppe
G11 - INFORMATION STORAGE