Sagae, Japan

Koichi Hatakeyama

This inventor holds 7 USPTO granted patents and 4 EPO patents. Top assignees: Tpr Co., Ltd., Tpr Industry Co., Ltd., Ipr Industry Co., Ltd.. Active years: 2019-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koichi Hatakeyama. Retrieved from https://idiyas.com/inventor/koichi-hatakeyama-n6hp9mrp

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 = 3.0

ph-index = 1


Location History:

  • Yamagata, JP (2019 - 2021)
  • Sagae, JP (2020 - 2022)

Company Filing History:


Years Active: 2019-2022

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7 patents (USPTO):Explore Patents

Title: Innovations of Koichi Hatakeyama

Introduction

Koichi Hatakeyama is a notable inventor based in Sagae, Japan. He has made significant contributions to the field of engineering, particularly in the development of cylinder liners. With a total of seven patents to his name, Hatakeyama's work has had a considerable impact on manufacturing processes.

Latest Patents

Hatakeyama's latest patents include innovative designs for cylinder liners. One of his patents describes a cylinder liner made from flaky graphite cast iron, featuring a nitrided layer on its inner periphery. This design incorporates a cross-hatching section and a roughness curve with a plateau honing shape, ensuring a ten-point average roughness of 4.0 μm or less. Another patent focuses on a cylinder liner for insert casting, which improves the bonding strength between the cylinder liner and the cylinder block by reducing voids. This invention includes multiple projections on the outer peripheral surface, enhancing the overall performance of the cylinder block.

Career Highlights

Throughout his career, Koichi Hatakeyama has worked with several companies, including TPR Co., Ltd. and TPR Industry Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects.

Collaborations

Hatakeyama has collaborated with notable coworkers such as Akira Sato and Tomoki Takiguchi. Their combined expertise has fostered a creative environment that has led to the development of groundbreaking inventions.

Conclusion

Koichi Hatakeyama's contributions to the field of engineering, particularly in the design of cylinder liners, showcase his innovative spirit and dedication to improving manufacturing processes. His patents reflect a commitment to excellence and a desire to push the boundaries of 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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