Yokohama, Japan

Kotaro Tezuka

This inventor holds 3 USPTO granted patents. Top assignees: Kabushiki Kaisha Toshiba, Toshiba Energy Systems & Solutions Corporatton, Other. Active years: 2010-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kotaro Tezuka. Retrieved from https://idiyas.com/inventor/kotaro-tezuka

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 4.1

ph-index = 1


Location History:

  • Tokyo, JP (2010)
  • Yokohama, JP (2015)
  • Yokohama Kanagawa, JP (2022)

Company Filing History:


Years Active: 2010-2022

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3 patents (USPTO):Explore Patents

Title: Kotaro Tezuka: Innovator in Hydraulic Turbine Technology

Introduction

Kotaro Tezuka, an esteemed inventor based in Yokohama, Kanagawa, Japan, has made significant contributions to the field of hydraulic turbine technology. With a total of three patents to his name, Tezuka has developed innovative solutions that enhance the efficiency and functionality of hydraulic machines.

Latest Patents

Among his latest patents are the **Francis-type turbine runner** and the **Francis-type turbine**. The Francis-type turbine runner features a design that specifies the relationship between the runner rotation center axis and the outlet end of the vane. In this design, an acute angle is defined on a negative pressure surface, which is crucial for optimal performance. Additionally, Tezuka's hydraulic machine incorporates a hydro turbine runner consisting of a crown at the center, long blades, and short blades, all designed to maximize efficiency in turbine operation.

Career Highlights

Throughout his career, Kotaro Tezuka has worked with notable companies such as **Kabushiki Kaisha Toshiba** and **Toshiba Energy Systems & Solutions Corporation**. His expertise in hydraulic machinery has enabled him to contribute to the development of advanced turbine technologies, significantly impacting the energy sector.

Collaborations

Tezuka has collaborated with talented professionals including Toshifumi Kurokawa and Kazuyuki Nakamura. These collaborations have fostered innovation and have furthered the development of his patented technologies, demonstrating the importance of teamwork in the field of engineering.

Conclusion

Kotaro Tezuka’s innovative spirit and dedication to hydraulic turbine technology have established him as a prominent inventor in his field. With his patented designs, he continues to pave the way for advancements in energy efficiency and sustainability. His work not only highlights his individual achievements but also showcases the collaborative effort that drives innovation in 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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