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For the Inventor, By the Inventor

Fremont, CA, United States of America

Chung-hee Chang

USPTO Granted Patents = 14

Average Co-Inventor Count = 2.9

ph-index = 6

Forward Citations = 88(Granted Patents)


Company Filing History:

goldMedal14 out of 8,679 
 
Seagate Technology Incorporated
 patents

Years Active: 2003-2015

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14 patents (USPTO):
1. 9190095 - Interlayer comprising chromium-containing alloy (2015-11-17),
2. 8557408 - Perpendicular media with dual soft magnetic layers (2013-10-15),
3. 8338005 - Recording layer and multilayered soft underlayer (2012-12-25),
4. 8147996 - Perpendicular media with dual soft magnetic layers (2012-04-03),
5. 8025993 - Recording media interlayer structure (2011-09-27),
6. 7354618 - Oxygen plasma post-deposition treatment of magnetic recording media (2008-04-08),
7. 7235314 - Inter layers for perpendicular recording media (2007-06-26),
8. 7192663 - Magnetic anisotropy of soft-underlayer induced by seedlayer (2007-03-20),
9. 7081268 - In-situ post-deposition oxidation treatment for improved magnetic recording media (2006-07-25),
10. 7060376 - Amorphous soft underlayers for perpendicular recording media (2006-06-13),
11. 6914749 - Magnetic anisotropy of soft-underlayer induced by magnetron field (2005-07-05),
12. 6777066 - Perpendicular magnetic recording media with improved interlayer (2004-08-17),
13. 6709773 - Magnetic anisotrophy of soft-underlayer induced by seedlayer (2004-03-23),
14. 6667118 - Texture-induced magnetic anisotropy of soft underlayers for perpendicular recording media (2003-12-23),

Title: Innovations of Chung-hee Chang

Introduction

Chung-hee Chang is a prominent inventor based in Fremont, CA (US). He has made significant contributions to the field of magnetic recording media, holding a total of 14 patents. His work focuses on improving the performance and cost-effectiveness of recording technologies.

Latest Patents

One of his latest patents is titled "Interlayer comprising chromium-containing alloy." This invention provides an apparatus and method for enhancing perpendicular magnetic recording media. The invention details a method of fabricating media with a reduced ruthenium (Ru) content interlayer structure while still meeting performance requirements. The perpendicular magnetic recording medium includes a non-magnetic substrate and a layer stack that consists of a magnetically soft underlayer, a non-magnetic seed layer, and an interlayer structure for orienting a layer of perpendicular magnetic recording material. The interlayer structure is a stacked configuration that includes a chromium alloy and an upper interlayer.

Another notable patent is "Perpendicular media with dual soft magnetic layers." This invention describes a recording medium that features a substrate, a first soft magnetic underlayer, a second soft magnetic underlayer, and a perpendicular magnetic recording layer without a spacer layer between the two soft magnetic underlayers.

Career Highlights

Chung-hee Chang is currently employed at Seagate Technology Incorporated, where he continues to innovate in the field of data storage technologies. His work has been instrumental in advancing the capabilities of magnetic recording media.

Collaborations

Chung-hee has collaborated with several talented individuals, including Rajiv Yadav Ranjan and Qixu David Chen. These collaborations have contributed to the development of cutting-edge technologies in the industry.

Conclusion

Chung-hee Chang's contributions to the field of magnetic recording media are noteworthy, with a focus on enhancing performance and reducing costs. His innovative patents reflect his commitment to advancing technology in data storage.

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