Ken L Chang

This inventor holds 15 USPTO granted patents, primarily in Disk Drive Technology. Top assignees: Western Digital Technologies, Inc., Maxtor Corporation. Active years: 2001-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ken L Chang. Retrieved from https://idiyas.com/inventor/ken-l-chang

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

USPTO Granted Patents = 15

% Patents Active = 33.3

Average Co-Inventor Count = 2.3

ph-index = 9

Forward Citations = 479(Granted Patents)

Location History:

San Jose, CA (US) (2001 - 2002)
Saratoga, CA (US) (2004 - 2011)

Company Filing History:

9 out of 5,433

Western Digital Technologies, Inc.

Years Active: 2001-2011

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Areas of Expertise:

Actuator Arm

Head Stack Assembly

Disk Drive

Positioner

Voice Coil

Suspension Flex

Coil Support

Data Transducer

Stamped Assembly

Wiring Protector

E-Block

15 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7911742 - Stamped actuator arm having longitudinally spaced-apart stamped protrusions for supporting a trace suspension flex (2011-03-22),

2. 7375929 - Actuator including an actuator body with parallel support extensions and coil support tab for supporting a coil and method of making the same (2008-05-20),

3. 7227725 - Head stack assembly with locking pins for retaining flex cable (2007-06-05),

4. 7215513 - Disk drive including a one-piece stamped actuator arm assembly and method of making same (2007-05-08),

5. 7180711 - Head stack assembly with an actuator body and flex cable guiding support and method of making the same (2007-02-20),

6. 7161769 - Disk drive having an actuator arm assembly that includes stamped actuator arms (2007-01-09),

7. 7145753 - Head stack assembly with insulated wiring extending between actuator coil and actuator main body section disposed in lateral wiring protector extending from actuator body (2006-12-05),

8. 7092216 - Disk drives and actuator assemblies having a pair of bonded voice coil supporting arms (2006-08-15),

9. 7088556 - Positioner for a disk drive that offsets the resultant force at the actuator hub to precisely position a data transducer (2006-08-08),

10. 7038886 - Positioner for precisely moving an E-block of a disk drive (2006-05-02),

11. 6982853 - Disk drive including a stamped arm assembly and method of making an actuator arm assembly (2006-01-03),

12. 6952331 - Positioner for precisely moving an E-block of a disk drive (2005-10-04),

13. 6768614 - Positioner for precisely moving an e-block of a disk drive (2004-07-27),

14. 6493187 - Disk drive with low profile head suspension assemblies (2002-12-10),

15. 6313970 - Disk drive with low profile suspension assemblies (2001-11-06),

Title: Ken L Chang: A Pioneer in Disk Drive Innovation

Introduction

Ken L Chang is a prominent inventor based in Saratoga, California, recognized for his significant contributions to the field of disk drive technology. With an impressive portfolio comprising 15 patents, Chang has established himself as a key figure in the development of advanced storage solutions.

Latest Patents

Among his latest innovations, Chang has introduced a stamped actuator arm featuring longitudinally spaced-apart stamped protrusions for supporting a trace suspension flex. This novel head stack assembly enhances the reliability and efficiency of disk drives. The unique design includes a stamped actuator arm paired with a head gimbal assembly, where the trace suspension flex has a metal base layer with multiple conductors supported by it. The stamped protrusions make contact with the trace suspension flex, ensuring enhanced functionality.

In addition, Chang has developed an actuator incorporating an actuator body with parallel support extensions and a coil support tab for supporting a coil. This actuator is designed for disk drives, featuring a main body section that defines a horizontal plane orthogonal to an axis of rotation. The innovative actuator not only optimizes space but also facilitates the efficient operation of the coil within the device.

Career Highlights

Ken L Chang has made significant strides in his career, working with renowned companies such as Western Digital Technologies, Inc. and Maxtor Corporation. His experience in these organizations has notably contributed to his expertise in the field of storage technologies.

Collaborations

Throughout his career, Chang has collaborated with talented professionals, including Kamran Oveyssi and Shawn E. Casey. These partnerships have likely enriched his innovative projects, fostering an environment of creativity and technological advancement.

Conclusion

Ken L Chang's work in the field of disk drive technology exemplifies the spirit of innovation. His patents reflect a deep understanding of engineering principles and a commitment to improving storage solutions. As technology continues to evolve, Chang's contributions will undoubtedly influence future developments in the industry.

Profile summary based on public USPTO records.

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]