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For the Inventor, By the Inventor

San Jose, CA, United States of America

Tsutomu Tom Yamashita

This inventor holds 28 USPTO granted patents, primarily in Magnetic Recording Media. Top assignees: Komag Corporation, Wd Media, LLC, Other. Active years: 1988-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tsutomu Tom Yamashita. Retrieved from https://idiyas.com/inventor/tsutomu-tom-yamashita

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

Calculating rank
USPTO Granted Patents = 28

% Patents Active = 100.0

Average Co-Inventor Count = 3.3

ph-index = 17

Forward Citations = 1,052(Granted Patents)


Location History:

  • Milpitas, CA (US) (1996 - 2000)
  • San Jose, CA (US) (1988 - 2015)

Company Filing History:

goldMedal26 out of 115 
 
Komag Corporation
 patents
silverMedal1 out of 160 
 
Wd Media, LLC
 patents
bronzeMedal1 out of 834,659 
Other
 patents

Years Active: 1988-2015

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Areas of Expertise:
Magnetic Recording Media
Thin Film Alloys
Carbon Overcoats
Corrosion Resistance
Sputtering Techniques
High Coercivity
Hard Disk Drives
Micro-Texture Media
Nucleation Layers
Magnetic Performance
Protective Films
Amorphous Disks
28 patents (USPTO):Explore Patents
1. 8956741 - Magnetic recording media with small grain size and narrow c-axis dispersion by using dual seed layer with substrate bias (2015-02-17),
2. 6855232 - Magnetic disk comprising a first carbon overcoat having a high SP3 content and a second carbon overcoat having a low SP3 content (2005-02-15),
3. RE38544 - Thin film magnetic alloy having low noise, high coercivity and high squareness (2004-07-06),
4. 6682807 - Magnetic disk comprising a first carbon overcoat having a high SP3 content and a second carbon overcoat having a low SP3 content (2004-01-27),
5. 6565719 - Magnetic disk comprising a first carbon overcoat having a high SP3 content and a second carbon overcoat having a low SP3 content (2003-05-20),
6. 6500567 - Ultra-thin nucleation layer for magnetic thin film media and the method for manufacturing the same (2002-12-31),
7. 6150015 - Ultra-thin nucleation layer for magnetic thin film media and the method (2000-11-21),
8. 6117499 - Micro-texture media made by polishing of a selectively irradiated surface (2000-09-12),
9. 6086730 - Method of sputtering a carbon protective film on a magnetic disk with (2000-07-11),
10. 6013161 - Thin film magnetic alloy having low noise, high coercivity and high (2000-01-11),
11. 5976326 - Method of sputtering selected oxides and nitrides for forming magnetic (1999-11-02),
12. 5908514 - Magnetic alloy for improved corrosion resistance and magnetic performance (1999-06-01),
13. 5851688 - Thin film magnetic alloy having low noise, high coercivity, and high (1998-12-22),
14. 5736013 - Method for forming an improved magnetic media including sputtering of (1998-04-07),
15. 5695387 - CSS magnetic recording head slider and method of making same (1997-12-09),

Title: The Legacy of Tsutomu Tom Yamashita: Inspiring Innovations in San Jose

Introduction:

Inventor Tsutomu Tom Yamashita's unwavering passion for innovation and relentless pursuit of technological advancement have left an indelible mark on the global engineering and inventor community. Based in San Jose, CA, his remarkable journey showcases a commitment to pushing boundaries and creating cutting-edge solutions.

Latest Patents:

Yamashita's recent patents demonstrate his dedication to advancing magnetic recording technology. One patent focuses on creating magnetic recording media with small grain size and narrow c-axis dispersion through a dual seed layer design with substrate bias voltage. Another patent outlines a method for producing magnetic disks with specific protective carbon layers, enhancing the performance and longevity of the disks.

Career Highlights:

With a portfolio of 28 patents to his name, Yamashita has made significant contributions to the field of magnetic storage technology. His work at companies like Komag Corporation and WD Media, LLC has been instrumental in shaping the industry's trajectory and driving innovation forward. Yamashita's expertise and vision have led to breakthroughs that have revolutionized data storage capabilities.

Collaborations:

Throughout his career, Yamashita has collaborated with esteemed professionals such as Tu Chen and Rajiv Yadav Ranjan. Together, they have tackled complex challenges, exchanged ideas, and brought to life groundbreaking innovations that have set new benchmarks in the field of magnetic recording technology.

Conclusion:

Tsutomu Tom Yamashita's legacy as an inventor and engineer is defined by his forward-thinking mindset, relentless drive for excellence, and commitment to innovation. His remarkable achievements continue to inspire the next generation of inventors, engineers, and technologists worldwide. Amidst a rapidly evolving technological landscape, Yamashita's work serves as a testament to the transformative power of passion, perseverance, and a relentless pursuit of innovation.

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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