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For the Inventor, By the Inventor

Kanagawa, Japan

Manabu Shiraki

This inventor holds 14 USPTO granted patents, primarily in Direct Current Motors. Top assignee: Other. Active years: 1976-1988.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Manabu Shiraki. Retrieved from https://idiyas.com/inventor/manabu-shiraki-71ts43l3

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

Calculating rank
USPTO Granted Patents = 14

% Patents Active = 100.0

Average Co-Inventor Count = 2.4

ph-index = 9

Forward Citations = 197(Granted Patents)


Location History:

  • Tokyo, JA (1976)
  • Yamato-shi Kanagawa-ken, JP (1980)
  • Yamato-shi, Nerima-ku, Kanagawa-ken, JP (1981)
  • Shimotsuruma, Yamato-shi, Kanagawa-ken, JP (1980 - 1982)
  • Yamato-shi, Kanagawa-kon, JP (1986)
  • Yamato-shi, Kanagawa-ken, JP (1978 - 1988)

Company Filing History:

goldMedal13 out of 834,601 
Other
 patents
where one patent can have more than one assignee

Years Active: 1976-1988

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Areas of Expertise:
Axial Fan
Direct Current Motor
Non-Superposed Windings
Double Layer Armature
Three-Phase DC Motor
Armature Coils
Motor Drive Systems
Synchronous Operation
14 patents (USPTO):Explore Patents
1. D297761 - Axial fan (1988-09-20),
2. 4583016 - Direct current motor (1986-04-15),
3. 4447751 - Direct current motor (1984-05-08),
4. 4437029 - Direct current motor (1984-03-13),
5. 4404485 - Direct current motor (1983-09-13),
6. 4382214 - Direct current motor (1983-05-03),
7. 4369388 - Direct current motor with non-superposed armature windings (1983-01-18),
8. 4315178 - Direct current motor with non-superposed armature windings (1982-02-09),
9. 4315177 - Direct current motor with non-superposed armature windings (1982-02-09),
10. 4243902 - Direct current motor with non-superposed armature windings (1981-01-06),
11. 4227107 - Direct current motor with double layer armature windings (1980-10-07),
12. 4197475 - Direct current motor with double layer armature windings (1980-04-08),
13. 4107587 - Three-phase DC motor having non-superimposed armature coils (1978-08-15),
14. 3931556 - System for driving a direct-current motor in synchronism with an (1976-01-06),

Title: Manabu Shiraki: A Brilliant Innovator in Motor Technology

Introduction

Manabu Shiraki, an inventive mind from Kanagawa-ken, Japan, has made significant contributions to the field of motor technology. With a remarkable portfolio featuring 14 patents, Shiraki's work reflects a deep understanding of electrical engineering and innovative design.

Latest Patents

Among his latest inventions, Shiraki has developed an advanced axial fan and a sophisticated direct current motor. The direct current motor is particularly noteworthy, comprising a unique field magnet with 2np magnetic poles, carefully designed to optimize torque generation. It features n(py.+-.1) armature coils strategically arranged to match the magnetic pole width, enhancing performance. This innovative motor also includes an electric power supply control device that ensures efficient commutation of the commutator current. The design culminates in a wave-winding-type armature that enhances the overall functionality and reliability of the motor.

Career Highlights

Throughout his career, Shiraki has demonstrated a knack for transforming complex concepts into practical applications. His dedication to research and development has led to breakthrough innovations in motor technology, gaining recognition in the industry.

Collaborations

Shiraki has collaborated with talented professionals in the field, including Itsuki Ban and Kazuhito Egami. Their combined expertise has fueled the development of cutting-edge technologies and propelled their projects to success.

Conclusion

In conclusion, Manabu Shiraki stands out as an influential inventor in the realm of motor technology. His 14 patents and innovative designs, particularly in the area of direct current motors, underscore his commitment to advancing the industry. With ongoing collaborations and a passion for innovation, Shiraki’s contributions continue to shape the future of engineering and technology.

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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