Ueda, Japan

Kimihiko Yamagishi

This inventor holds 4 USPTO granted patents and 1 published patent application and 1 EPO patent. Top assignee: Hioki E.e. Corporation. Active years: 2023-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kimihiko Yamagishi. Retrieved from https://idiyas.com/inventor/kimihiko-yamagishi

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

Calculating rank
USPTO Granted Patents = 4 

% Patents Active = 100.0

 

Average Co-Inventor Count = 4.4

ph-index = 1


Company Filing History:


Years Active: 2023-2026

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4 patents (USPTO):Explore Patents

Title: Kimihiko Yamagishi: Innovator in Current Sensor Technology

Introduction

Kimihiko Yamagishi is a prominent inventor based in Ueda, Japan. He has made significant contributions to the field of current sensor technology, holding a total of 4 patents. His work focuses on enhancing the accuracy and efficiency of current measurement systems.

Latest Patents

Yamagishi's latest patents include innovative designs for current sensors. The first patent describes a current sensor that features an excitation detection winding, which detects magnetic flux through a second magnetic core. This design outputs a detection signal that indicates the measurement-target current. Additionally, it includes an auxiliary winding that also detects magnetic flux and provides an auxiliary signal for current measurement. The feedback winding in this sensor is configured to cancel out magnetic flux from the first and second magnetic cores, ensuring precise current measurement.

The second patent presents a current sensor designed to detect the magnitude of current flowing through a measuring object. This sensor utilizes a magnetic core with two components arranged in parallel, each having different magnetic permeabilities across frequency bands. This innovative approach allows the sensor to accurately detect current magnitudes across a combined frequency range.

Career Highlights

Kimihiko Yamagishi is currently employed at Hioki E.E. Corporation, where he continues to develop cutting-edge technologies in current sensing. His expertise and innovative mindset have positioned him as a key player in the advancement of electrical measurement tools.

Collaborations

Yamagishi collaborates with talented coworkers, including Yuki Karasawa and Koki Nakazawa. Their combined efforts contribute to the ongoing success and innovation at Hioki E.E. Corporation.

Conclusion

Kimihiko Yamagishi's contributions to current sensor technology exemplify his dedication to innovation and excellence. His patents reflect a deep understanding of electromagnetic principles and their applications in modern 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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