Kanagawa, Japan

Hiroki Katayama

This inventor holds 6 USPTO granted patents and 1 published patent application and 4 EPO patents. Top assignee: Fujitsu General Limited. Active years: 2018-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroki Katayama. Retrieved from https://idiyas.com/inventor/hiroki-katayama-8i7yp3be

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

USPTO Granted Patents = 6 

% Patents Active = 100.0

 

Average Co-Inventor Count = 3.7

ph-index = 2

Forward Citations = 8(Granted Patents)


Company Filing History:


Years Active: 2018-2024

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6 patents (USPTO):Explore Patents

Title: Hiroki Katayama: Innovator in Rotary Compressor Technology

Introduction

Hiroki Katayama is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of rotary compressor technology, holding a total of 6 patents. His innovative designs focus on enhancing energy efficiency and reliability in refrigeration systems.

Latest Patents

One of his latest patents is a rotary compressor that includes a plurality of recessed portions for retaining lubricating oil. This design features a compression unit that consists of a cylinder, an upper end plate, a lower end plate, and a piston fitted to a rotating shaft. The piston revolves along the inner peripheral surface of the cylinder, forming a cylinder chamber. The oil-film retention region, which is formed in various components, effectively retains lubricating oil, thereby improving the compressor's performance. Another notable patent is a rotary compressor that excels in energy-saving performance and reliability. This design suppresses over-compression of the refrigerant, ensuring efficient operation.

Career Highlights

Hiroki Katayama is currently employed at Fujitsu General Limited, where he continues to innovate in the field of compressor technology. His work has been instrumental in advancing the efficiency and functionality of rotary compressors.

Collaborations

Throughout his career, Katayama has collaborated with notable colleagues, including Motonobu Furukawa and Taku Morishita. These collaborations have contributed to the development of cutting-edge technologies in the industry.

Conclusion

Hiroki Katayama's contributions to rotary compressor technology have established him as a key figure in the field. His innovative patents reflect his commitment to enhancing energy efficiency and reliability in refrigeration systems.

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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