Isesaki, Japan

Hidehiko Koyashiki

This inventor holds 6 USPTO granted patents and 1 published patent application and 1 EPO patent. Top assignee: Yamada Manufacturing Co., Ltd.. Active years: 2012-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hidehiko Koyashiki. Retrieved from https://idiyas.com/inventor/hidehiko-koyashiki

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

USPTO Granted Patents = 6 


Average Co-Inventor Count = 2.8

ph-index = 1

Forward Citations = 2(Granted Patents)


Location History:

  • Gunma-ken, JP (2012)
  • Isesaki, JP (2015 - 2016)
  • Kiryu, JP (2019)

Company Filing History:


Years Active: 2012-2019

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6 patents (USPTO):Explore Patents

Title: **The Innovative Contributions of Hidehiko Koyashiki**

Introduction

Hidehiko Koyashiki, an inventor based in Isesaki, Japan, has made significant strides in the field of engineering with a total of six patents to his name. His work primarily focuses on innovative solutions in oil pump mechanisms and control valves, showcasing his commitment to enhancing mechanical efficiency and performance.

Latest Patents

Koyashiki's recent inventions include a **relief device for an oil pump** and an advanced **control valve**. The relief device features a sophisticated design that includes a relief valve with both small and large diameter valve chambers, assisting in maintaining consistent communication between various components of the oil pump. This design allows for efficient oil discharge from the relief discharge section. The auxiliary channel integrated with a temperature-sensitive valve enhances the operational dynamics of the device.

In addition, the control valve developed by Koyashiki includes a main channel along with a channel cross-section adjustment spool, facilitating precise control based on engine rotation speed. This valve smartly adapts to low, medium, and high-speed regions, ensuring optimal functioning across a range of operational conditions.

Career Highlights

Koyashiki has dedicated his career to innovation while working at Yamada Manufacturing Co., Ltd. His expertise in creating effective engineering solutions has positioned him as a key figure in his organization, furthering the company's goals of progressive developments in machinery.

Collaborations

Throughout his career, Koyashiki has collaborated with esteemed colleagues such as Junichi Miyajima and Takatoshi Watanabe. These partnerships have contributed to the refinement of his inventions and the enhancement of collaborative problem-solving within his field, fostering a spirit of innovation and teamwork.

Conclusion

Hidehiko Koyashiki stands out as a prominent inventor with a focus on practical and effective innovations in oil pump technology and control systems. His commitment to engineering excellence and collaboration with talented colleagues plays a crucial role in driving advancements in the industry, marking him as an influential figure in modern mechanical 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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