Yamagata, Japan

Shinji Tsukada

This inventor holds 1 USPTO granted patent and 1 published patent application. Top assignee: Fujitsu Corporation. Active years: 2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shinji Tsukada. Retrieved from https://idiyas.com/inventor/shinji-tsukada

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

USPTO Granted Patents = 1 

% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 1

Forward Citations = 1(Granted Patents)


Company Filing History:


Years Active: 2001

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1 patent (USPTO):Explore Patents

Title: The Innovations of Shinji Tsukada

Introduction

Shinji Tsukada is a notable inventor based in Yamagata, Japan. He has made significant contributions to the field of spindle motors, particularly in the context of recording disk apparatuses. His innovative approach has led to the development of a unique patent that addresses thermal expansion issues in motor design.

Latest Patents

One of Shinji Tsukada's key patents is titled "Spindle motor having temperature compensation member encircling hub body around bearing." This invention comprises a stationary axis fixed to the housing of a recording disk apparatus. The hub body is supported around the stationary axis by upper and lower ball bearings for rotation. A member is designed to at least partly surround the hub body around the upper and lower ball bearings. This member serves to suppress thermal expansion of the hub body by having a thermal expansion coefficient smaller than that of the hub body. This innovative design enhances the performance and reliability of spindle motors.

Career Highlights

Shinji Tsukada is currently employed at Fujitsu Corporation, where he continues to work on advancements in motor technology. His expertise in this area has made him a valuable asset to the company. With a total of 1 patent to his name, Tsukada's contributions are recognized within the industry.

Collaborations

Shinji Tsukada collaborates with fellow inventor Hirokazu Ishizaki, contributing to the development of innovative technologies in their field. Their partnership exemplifies the spirit of teamwork in driving technological advancements.

Conclusion

Shinji Tsukada's work in spindle motor technology showcases his innovative spirit and dedication to improving engineering solutions. His patent reflects a significant advancement in the field, and his ongoing contributions at Fujitsu Corporation highlight his commitment to 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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