Kyoto, Japan

Yuji Morioka

This inventor holds 2 USPTO granted patents. Top assignee: Nippon Densan Corporation. Active years: 1994-1995.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yuji Morioka. Retrieved from https://idiyas.com/inventor/yuji-morioka-qdvhhxvu

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 1.6

ph-index = 2

Forward Citations = 22(Granted Patents)


Location History:

  • Kyoto, JP (1994)
  • Naka, JP (1995)

Company Filing History:


Years Active: 1994-1995

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2 patents (USPTO):Explore Patents

Title: Yuji Morioka: Innovator in Spindle Motor Technology

Introduction

Yuji Morioka is a distinguished inventor based in Kyoto, Japan. He has made significant contributions to the field of spindle motor technology, holding a total of 2 patents. His innovative designs have enhanced the functionality and efficiency of spindle motors, which are crucial components in various electronic devices.

Latest Patents

Morioka's latest patents include a unique spindle motor design that features an inner wall of a hub with a step surface. This design incorporates a ring-like spacer that determines the upper position of a rotor magnet. The spacer's inside diameter is smaller than the inner wall at the bearing mounting surface, creating a space that retains adhesive, preventing it from entering the motor's interior. Another notable patent is for a spindle motor with a stator core supported by a resin member. This design includes a housing, a rotatable hub member, and a magnetic fluid seal that grounds static electricity, enhancing the motor's performance.

Career Highlights

Morioka is currently employed at Nippon Densan Corporation, where he continues to innovate in the field of spindle motors. His work has been instrumental in advancing motor technology, making it more reliable and efficient for various applications.

Collaborations

Throughout his career, Morioka has collaborated with talented individuals such as Masanobu Chuta and Kuniyasu Iwazaki. These collaborations have fostered a creative environment that has led to groundbreaking advancements in spindle motor technology.

Conclusion

Yuji Morioka's contributions to spindle motor technology exemplify his dedication to innovation and excellence. His patents reflect a deep understanding of engineering principles and a commitment to improving motor performance. His work continues to influence the industry and inspire future innovations.

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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