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For the Inventor, By the Inventor

Piscataway, NJ, United States of America

James Liang

This inventor holds 3 USPTO granted patents. Top assignees: Trace Storage Tech. Corp., Trace Storage Technology Corp.. Active years: 1999-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: James Liang. Retrieved from https://idiyas.com/inventor/james-liang-p7nfa5je

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

USPTO Granted Patents = 3

% Patents Active = 100.0

Average Co-Inventor Count = 4.3

ph-index = 2

Forward Citations = 9(Granted Patents)


Company Filing History:

goldMedal2 out of 5 
 
Trace Storage Tech. Corp.
 patents
silverMedal1 out of 7 
 
Trace Storage Technology Corp.
 patents

Years Active: 1999-2000

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3 patents (USPTO):Explore Patents
1. 6033772 - CoCrNiTa/Cr magnetic recording medium (2000-03-07),
2. 5981018 - Magnetic recording media used in a high-density hard disk drive (1999-11-09),
3. 5873984 - Method of sputtering an amorphous carbon overcoat as a protective film (1999-02-23),

Title: Innovations by James Liang in Magnetic Recording Media

Introduction

James Liang is an accomplished inventor based in Piscataway, NJ (US), known for his significant contributions to the field of magnetic recording media. With a total of three patents to his name, Liang has developed advanced technologies that enhance the performance and efficiency of hard disk drives.

Latest Patents

One of Liang's latest patents is the CoCrNiTa/Cr magnetic recording medium. This invention is designed for high-density computer hard disks and features a unique composition that includes an aluminum or Ni/P substrate, a chromium underlayer, a four-component magnetic recording layer, and a carbon protective layer. The magnetic recording layer consists of 66-78 atom percent cobalt, 12-16 atom percent chromium, 6-10 atom percent nickel, and 4-8 atom percent tantalum. This innovative design exhibits a high coercivity of greater than 2,800 Oe, resulting in improved recording density, reduced noise, enhanced off-track capability, and a lower on-track error rate. Additionally, it allows for the sputtering process to be conducted at a significantly lower temperature.

Another notable patent by Liang pertains to high-coercivity magnetic recording media used in hard disk drives. This invention comprises a nonmagnetic substrate, a seed layer made of NiAl alloy, a sublayer of CrV alloy, a magnetic layer of CoCrPtTaNb alloy, and a carbon overcoat. The structure of this magnetic recording medium greatly improves the signal-to-noise ratio, coercivity, overwrite capability, and orientation ratio, thereby enhancing the storage density and read/write capacity. The coercivity of the magnetic layer can reach as high as 4000 Oersteds, even without the NiAl seed layer.

Career Highlights

Throughout his career, James Liang has worked with notable companies such as Trace Storage Tech Corp. and Trace Storage Technology Corp. His work has significantly impacted the development of magnetic recording technologies, making him a key figure in the industry.

Collaborations

Liang has collaborated with talented individuals such as Tai-hwang Lai and Yu-Yun Lo, contributing to the advancement of innovative technologies in magnetic recording media.

Conclusion

James Liang's contributions to the field of magnetic recording media have led to significant advancements in hard disk drive technology. His innovative patents demonstrate his expertise and commitment to enhancing data storage solutions

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]
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