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For the Inventor, By the Inventor

Komaki, Japan

Masayuki Nashiki

This inventor holds 52 USPTO granted patents, primarily in Electric Motors (CPC class H02K). Top assignees: Okuma Corporation, Denso Corporation, Kabushiki Kaisha Okuma Tekkosho. Active years: 1984-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masayuki Nashiki. Retrieved from https://idiyas.com/inventor/masayuki-nashiki

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

USPTO Granted Patents = 52

% Patents Active = 65.4

Average Co-Inventor Count = 1.5

ph-index = 17

Forward Citations = 786(Granted Patents)

Forward Citations (Not Self Cited) = 767(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Nagoya, JP (1984 - 1988)
  • Ooguchi, JP (1991)
  • Niwa, JP (1991 - 1998)
  • Aichi, JP (1991 - 2001)
  • Niwa-gun, JP (1997 - 2001)
  • Komaki, JP (1998 - 2014)

Company Filing History:

goldMedal25 out of 418 
 
Okuma Corporation
 patents
silverMedal18 out of 20,407 
 
Denso Corporation
 patents
bronzeMedal8 out of 51 
 
Kabushiki Kaisha Okuma Tekkosho
 patents
4. 1 out of 28 
 
Okuma Machinery Works Ltd.
 patents

Years Active: 1984-2014

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Areas of Expertise:
Switched Reluctance Motor
AC Motor
Magnetic Flux
Control Device
Permanent Magnet
Torque Ripple
Stator Structure
Brushless Motor
Multi-Phase
Synchronous Motor
Windings
Bearing Structure
52 patents (USPTO):Explore Patents
1. 8922153 - Full-pitch windings switched reluctance motor (2014-12-30),
2. 8847522 - Reluctance motor with improved stator structure (2014-09-30),
3. 8803376 - AC motor and control apparatus for the same (2014-08-12),
4. 8704472 - Brushless electric motor provided with rotor having intermediate magnetic pole (2014-04-22),
5. 8395294 - AC motor with loop windings and improved magnetic flux paths (2013-03-12),
6. 8203246 - Five-phase motor with improved stator structure (2012-06-19),
7. 8120215 - Motor and control unit thereof (2012-02-21),
8. 7911107 - AC electric motor (2011-03-22),
9. 7825561 - Motor with simplified structure and related control device (2010-11-02),
10. 7816822 - Motor and control unit thereof (2010-10-19),
11. 7781931 - Switched reluctance motor (2010-08-24),
12. 7772790 - System and method for controlling motor using parameter associated with magnetic flux (2010-08-10),
13. 7598633 - [object Object] (2009-10-06),
14. 7576466 - Electric motor with minimized cogging and related method of determining stator pole geometry (2009-08-18),
15. 7569962 - Multi-phase brushless motor with reduced number of stator poles (2009-08-04),

Title: Masayuki Nashiki: Innovator in Electromechanical Engineering

Introduction

Masayuki Nashiki is a prominent inventor based in Komaki, Japan, renowned for his significant contributions to the field of electromechanical engineering. With an impressive portfolio of 52 patents, Nashiki has dedicated his career to advancing motor technology, specifically focusing on switched reluctance motors.

Latest Patents

Nashiki's latest innovations include the "Full-pitch windings switched reluctance motor," which introduces an innovative approach to current control. This motor utilizes one set of current components to electromagnetically act on a single set of stator poles for one phase, allowing for precise current control without interference from other phases. This advancement enables the creation of compact control circuits and enhances the motor’s efficiency.

Another notable patent is the "Reluctance motor with improved stator structure." In this design, a stationary member features multiple first poles arranged within 360 electrical degrees, with windings placed in the spaces between them. A movable member, equipped with a different number of second poles, interacts with the stationary member via an unidirectional current supply unit, creating an attractive force that facilitates movement between the two components.

Career Highlights

Throughout his career, Nashiki has collaborated with leading companies in the industry, including Okuma Corporation and Denso Corporation. His work in these companies has not only showcased his engineering expertise but also fostered an environment for innovation in motor technologies.

Collaborations

Nashiki has worked alongside esteemed colleagues such as Tomokazu Ishikawa and Shinji Makita. Their collaborative efforts have contributed significantly to the development and improvement of various electromechanical systems, paving the way for future advancements in the field.

Conclusion

Masayuki Nashiki's contributions to electromechanical engineering, particularly in switched reluctance motors, reflect a prolific and impactful career. His latest patents demonstrate not only his expertise but also his commitment to advancing motor technology. As he continues to innovate, the engineering community eagerly anticipates his future inventions.

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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