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For the Inventor, By the Inventor

Kariya, Japan

Kiyoshi Fujii

This inventor holds 11 USPTO granted patents. Top assignee: Denso Corporation. Active years: 2014-2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kiyoshi Fujii. Retrieved from https://idiyas.com/inventor/kiyoshi-fujii-aj1pjdua

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

Calculating rank
USPTO Granted Patents = 11

% Patents Active = 90.9

Average Co-Inventor Count = 1.9

ph-index = 3

Forward Citations = 19(Granted Patents)


Location History:

  • Chita-gun, JP (2014)
  • Kasugai, JP (2014 - 2015)
  • Kariya, JP (2017 - 2021)

Company Filing History:

goldMedal11 out of 20,443 
 
Denso Corporation
 patents

Years Active: 2014-2021

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11 patents (USPTO):Explore Patents
1. 10998838 - Control apparatus and control method for rotating electrical machine (2021-05-04),
2. 10103671 - Control apparatus for rotary electric machine (2018-10-16),
3. 9948220 - Rotation angle estimation apparatus for rotating electric machine (2018-04-17),
4. 9874461 - Apparatus for estimating rotational position of predetermined magnetic pole of rotary electric machine (2018-01-23),
5. 9847744 - Controller and control method for rotary electric machine (2017-12-19),
6. 9762156 - Control apparatus for rotating electric machine (2017-09-12),
7. 9748883 - Control device for rotating electrical machine (2017-08-29),
8. 9112436 - System for controlling controlled variable of rotary machine (2015-08-18),
9. 9093932 - Control system for three-phase rotary machine (2015-07-28),
10. 8907602 - Control apparatus of rotating device (2014-12-09),
11. 8816618 - Rotary machine control apparatus (2014-08-26),

Title: Kiyoshi Fujii: Innovator in Electrical Machine Control

Introduction

Kiyoshi Fujii is a prominent inventor based in Kariya, Japan. He has made significant contributions to the field of electrical machines, holding a total of 11 patents. His work focuses on control apparatuses and methods that enhance the efficiency and functionality of rotating electrical machines.

Latest Patents

Fujii's latest patents include innovative technologies such as a control apparatus and control method for rotating electrical machines. This invention features a rotor position judging unit that detects the rotor position by utilizing induced voltages generated at the respective phases of an armature winding. As the field current flowing through a field winding rises toward a target value, induced voltages are generated at the armature winding phases through the temporal differentiation of a magnetic flux. The rotor position judging unit then determines the rotor position based on a table containing combinations of amplitude ratios and polarities of the induced voltages.

Another notable patent is a control apparatus for rotary electric machines. This apparatus includes a first manipulation unit that controls the voltage phase of a voltage vector applied to an armature winding while managing the field current. This ensures that the deviation between the amplitude of the induced voltage and a predetermined voltage remains within acceptable limits. Additionally, a second manipulation unit controls the field current to maintain the target value for a larger operational region.

Career Highlights

Kiyoshi Fujii is currently employed at Denso Corporation, a leading global automotive components manufacturer. His work at Denso has allowed him to apply his innovative ideas in practical applications, contributing to advancements in automotive technology.

Collaborations

Fujii has collaborated with notable colleagues such as Akimasa Osaki and Hideki Kabune. These partnerships have fostered a creative environment that encourages the development of cutting-edge technologies in the field of electrical engineering.

Conclusion

Kiyoshi Fujii's contributions to the field of electrical machines through his patents and work at Denso Corporation highlight his role as a key innovator. His inventions continue to influence the efficiency and performance of electrical systems in various applications.

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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