Hitachi, Japan

Kenji Kumasaka

This inventor holds 4 USPTO granted patents and 2 EPO patents. Top assignees: Hitachi, Ltd., Hitachi Engineering Services Co., Ltd.. Active years: 1983-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kenji Kumasaka. Retrieved from https://idiyas.com/inventor/kenji-kumasaka

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


% Patents Active = 50.0

 

Average Co-Inventor Count = 5.0

ph-index = 3

Forward Citations = 21(Granted Patents)


Company Filing History:


Years Active: 1983-2011

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4 patents (USPTO):Explore Patents

Title: Kenji Kumasaka: Innovator in Eddy Current Testing Technology

Introduction

Kenji Kumasaka, an accomplished inventor from Hitachi, Japan, has made significant contributions to the field of turbine testing technology. With a total of four patents to his name, Kumasaka's innovative work focuses on enhancing the reliability and efficiency of turbine components through advanced testing methods.

Latest Patents

Among Kumasaka's latest achievements are two pivotal patents. The first is an "Eddy Current Testing Apparatus and Eddy Current Testing Method," which details a sophisticated approach for conducting tests on turbine rotor components. This method involves inserting a probe equipped with an eddy current testing sensor through a hole formed on the disc and blade fork portions, allowing for a thorough examination of the internal surfaces.

The second patent, titled "Ultrasonic Testing Apparatus for Turbine Forks and Method Thereof," introduces an innovative ultrasonic testing apparatus specifically designed for turbine forks, enhancing the testing process for turbine blades joined to turbine discs.

Career Highlights

Kenji Kumasaka has garnered valuable experience working with renowned companies such as Hitachi, Ltd. and Hitachi Engineering & Services Co., Ltd. His career has been marked by a commitment to advancing turbine technology, showcasing both technical ingenuity and practical application in his field.

Collaborations

Throughout his career, Kumasaka has worked alongside notable colleagues, including Yutaka Suzuki and Masahiro Koike. These collaborations have fostered an environment of innovation and progress, as they share knowledge and expertise to push the boundaries of turbine testing technology.

Conclusion

Kenji Kumasaka's contributions to eddy current and ultrasonic testing methods reflect his dedication to improving turbine component reliability. His patents demonstrate a profound understanding of turbine technology, paving the way for future advancements in the industry. As an inventor, Kumasaka continues to inspire innovation and excellence in the field of engineering.

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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