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For the Inventor, By the Inventor

Hitachinaka, Japan

Yoshihisa Ishikawa

This inventor holds 11 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 2010-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshihisa Ishikawa. Retrieved from https://idiyas.com/inventor/yoshihisa-ishikawa

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

USPTO Granted Patents = 11

% Patents Active = 36.4

Average Co-Inventor Count = 2.8

ph-index = 4

Forward Citations = 50(Granted Patents)


Company Filing History:

goldMedal11 out of 42,726 
 
Hitachi, Ltd.
 patents

Years Active: 2010-2014

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11 patents (USPTO):Explore Patents
1. 8829754 - Electric rotating machine (2014-09-09),
2. 8471428 - Rotating electrical machine (2013-06-25),
3. 8334629 - Electric rotating machine (2012-12-18),
4. 8294325 - Stator core for dynamo-electric machine and manufacturing method therefor (2012-10-23),
5. 8134269 - Electric motor (2012-03-13),
6. 8125116 - Alternator for vehicle and rotating electrical machine (2012-02-28),
7. 7915778 - Electric motor (2011-03-29),
8. 7830060 - Electric motor (2010-11-09),
9. 7777389 - Rotating electrical machine (2010-08-17),
10. 7759837 - Rotating electrical machine (2010-07-20),
11. 7701109 - Rotating electrical machine (2010-04-20),

Title: Innovations of Yoshihisa Ishikawa

Introduction

Yoshihisa Ishikawa is a prominent inventor based in Hitachinaka, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of rotating electrical machines. With a total of 11 patents to his name, Ishikawa's work has had a considerable impact on the industry.

Latest Patents

Ishikawa's latest patents include an electric rotating machine and a rotating electrical machine. The electric rotating machine patent describes an alternator that features a rotor with multiple magnetic poles and a stator designed to optimize the interaction between the rotor and stator. The design ensures that the coil conductors are wound in a manner that allows for the formation of two stator magnetic poles with opposite polarities. The rotating electrical machine patent outlines a similar concept, emphasizing the arrangement of coils and magnetic poles to enhance efficiency and performance.

Career Highlights

Throughout his career, Ishikawa has been associated with Hitachi, Ltd., a leading company in technology and engineering. His innovative designs and patents have contributed to advancements in electrical machinery, showcasing his expertise and dedication to the field.

Collaborations

Ishikawa has worked alongside notable colleagues, including Kenji Miyata and Toshio Ishikawa. Their collaborative efforts have furthered the development of innovative technologies in electrical engineering.

Conclusion

Yoshihisa Ishikawa's contributions to the field of electrical engineering through his patents and collaborations highlight his role as a key innovator. His work continues to influence advancements in rotating electrical machines, making a lasting impact on the industry.

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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