Cherng Chyi Han

This inventor holds 17 USPTO granted patents and 1 published patent application, primarily in GMR Sensor Technology. Top assignee: Headway Technologies, Incorporated. Active years: 2005-2016.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Cherng Chyi Han. Retrieved from https://idiyas.com/inventor/cherng-chyi-han-d880u2a9

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

Calculating rank

USPTO Granted Patents = 17 (Patent Applications = 1)

% Patents Active = 35.3

Average Co-Inventor Count = 4.4

ph-index = 6

Forward Citations = 139(Granted Patents)

Company Filing History:

17 out of 1,231

Headway Technologies, Incorporated

patents

Years Active: 2005-2016

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Areas of Expertise:

GMR Sensor

Magnetic Recording

Writer Design

Fabrication Method

Exchange Bias

Iron Rich NiFe

High Data Rate

Planarized Head

Low Resistance Coil

Shield Material

Short Yoke

Seed/AFM Combination

17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9337414 - Reader sensor structure and its method of construction (2016-05-10),

2. 8865008 - Two step method to fabricate small dimension devices for magnetic recording applications (2014-10-21),

3. 8842389 - Wrap-around shielded writer with highly homogeneous shield material (2014-09-23),

4. 8728333 - Method to fabricate small dimension devices for magnetic recording applications (2014-05-20),

5. 7978440 - Seed/AFM combination for CCP GMR device (2011-07-12),

6. 7400475 - Patterned, synthetic longitudinally exchange biased GMR sensor (2008-07-15),

7. 7390529 - Free layer for CPP GMR having iron rich NiFe (2008-06-24),

8. 7331100 - Process of manufacturing a seed/AFM combination for a CPP GMR device (2008-02-19),

9. 7268975 - High data rate writer with low resistance coil and short yoke (2007-09-11),

10. 7152304 - Method for fabricating a patterned, synthetic transverse exchange biased GMR sensor (2006-12-26),

11. 7146711 - Method to make planarized GMR head for high track density (2006-12-12),

12. 7134186 - Method for fabricating a patterned, synthetic transversely exchanged biased GMR sensor (2006-11-14),

13. 7126789 - Low DC coil resistance planar writer (2006-10-24),

14. 7116518 - Short yoke length planar writer with low DC coil resistance (2006-10-03),

15. 7099125 - Easily manufactured exchange bias stabilization scheme (2006-08-29),

Title: Cherng Chyi Han: Innovator in Magnetic Recording Technologies

Introduction

Cherng Chyi Han is a prominent inventor based in San Jose, CA (US), known for his significant contributions to the field of magnetic recording technologies. With a total of 17 patents to his name, Han has made remarkable advancements that enhance data storage capabilities.

Latest Patents

One of Han's latest patents is titled "Reader sensor structure and its method of construction." This invention involves a TMR (tunneling magnetoresistive) read sensor designed with a narrow trackwidth, allowing for high resolution in densely recorded data. The innovative design improves magnetic stability and reduces thermal noise by utilizing a synthetic antiferromagnetic pinning/pinned layer that remains unpatterned. Another notable patent is the "Two step method to fabricate small dimension devices for magnetic recording applications." This method employs a two-part ion beam etch sequence to create a free layer width as small as 20-25 nm in a MTJ element, ensuring a high MR ratio and low resistance-area value.

Career Highlights

Cherng Chyi Han is currently employed at Headway Technologies, Incorporated, where he continues to push the boundaries of magnetic recording technology. His work has been instrumental in developing methods that enhance the performance and reliability of magnetic recording devices.

Collaborations

Han has collaborated with notable colleagues, including Min Li and Cheng Tzong Horng, contributing to various projects that advance the field of magnetic recording.

Conclusion

Cherng Chyi Han's innovative work in magnetic recording technologies has established him as a key figure in the industry. His patents reflect a commitment to improving data storage solutions, making significant strides in the field.

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]

1 patent pending: