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For the Inventor, By the Inventor

Nagano, Japan

Kazushi Miura

This inventor holds 18 USPTO granted patents and 1 published patent application, primarily in Spindle Motor Technology. Top assignees: Nidec Corporation, Sankyo Seiki Mfg. Co., Ltd, Kabushiki Kaisha Sankyo Seiki Seisakusho. Active years: 2000-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazushi Miura. Retrieved from https://idiyas.com/inventor/kazushi-miura

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

Calculating rank
USPTO Granted Patents = 18 

% Patents Active = 66.7

Average Co-Inventor Count = 4.0

ph-index = 7

Forward Citations = 170(Granted Patents)


Location History:

  • Tokyo, JP (2004)
  • Nagano, JP (2000 - 2005)
  • Kyoto, JP (2009 - 2014)

Company Filing History:

goldMedal7 out of 1,525 
 
Nidec Corporation
 patents
silverMedal5 out of 264 
 
Sankyo Seiki Mfg. Co., Ltd
 patents
bronzeMedal4 out of 307 
 
Kabushiki Kaisha Sankyo Seiki Seisakusho
 patents
4. 1 out of 5,431 
 
Western Digital Technologies, Inc.
 patents
5. 2 out of 834,570 
Other
 patents
where one patent can have more than one assignee

Years Active: 2000-2014

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Areas of Expertise:
Spindle Motor
Dynamic Pressure Bearing
Fluid Bearing
Hydrodynamic Bearing
Storage Disk Drive
Rotor Hub
Thrust Bearing
Component Density
Manufacturing Method
Disk Drive
Bearings
Mechanism
18 patents (USPTO):Explore Patents
1. 8675304 - Disk drive spindle motor with hole volume and component density relationship (2014-03-18),
2. 8567067 - Method of manufacturing fluid dynamic bearing mechanism, motor, and storage disk drive (2013-10-29),
3. 8553355 - Spindle motor and storage disk drive (2013-10-08),
4. 8542459 - Spindle motor and storage disk drive (2013-09-24),
5. 8416524 - Spindle motor having connecting mechanism connecting lead wire and circuit board, and storage disk drive having the same (2013-04-09),
6. 8385017 - Spindle motor including fluid bearing and storage disk drive including the same (2013-02-26),
7. 7550883 - Rotor hub, spindle motor, and recording disk driving apparatus (2009-06-23),
8. 6837622 - Dynamic pressure bearing apparatus (2005-01-04),
9. 6827953 - Compositions comprising saccharomyces cerevisiae and lactic acid bacteria (2004-12-07),
10. 6793394 - Hydrodynamic bearing device (2004-09-21),
11. 6698097 - Method for manufacturing a tool that is used to form dynamic pressure generating grooves in dynamic pressure bearing devices (2004-03-02),
12. 6663287 - Thrust dynamic pressure bearing apparatus and method for manufacturing the same (2003-12-16),
13. 6378209 - Method of producing fluid bearing device (2002-04-30),
14. 6375357 - Spindle motor (2002-04-23),
15. 6343877 - Spindle motor (2002-02-05),

Title: Kazushi Miura: Innovator in Disk Drive Technology

Introduction

Kazushi Miura is a prominent inventor based in Nagano, Japan. He has made significant contributions to the field of disk drive technology, holding a total of 18 patents. His work focuses on improving the efficiency and performance of motors used in disk drives.

Latest Patents

One of his latest patents is for a disk drive spindle motor that features a unique relationship between hole volume and component density. This innovative motor design includes a stationary portion and a rotating portion. The rotating portion consists of a sleeve with a communicating hole that extends completely from the upper to the lower surface. Additionally, a cover portion includes a hole that overlaps with the communicating hole in a radial direction. The design ensures that the center of the hole is aligned with the central axis, optimizing performance. Another notable patent involves a method for manufacturing a fluid dynamic bearing mechanism for motors and storage disk drives. This method includes several steps to ensure the proper assembly and lubrication of the bearing mechanism.

Career Highlights

Kazushi Miura has worked with notable companies such as Nidec Corporation and Sankyo Seiki Mfg. Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to advancements in motor technology.

Collaborations

Throughout his career, Miura has collaborated with talented individuals, including Masato Gomyo and Takehito Tamaoka. These partnerships have fostered innovation and creativity in his projects.

Conclusion

Kazushi Miura's contributions to disk drive technology and his impressive portfolio of patents highlight his role as a leading inventor in the field. His innovative designs and methods continue to influence the industry and pave the way for future advancements.

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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