Tokyo, Japan

Ryoji Kawai

This inventor holds 3 USPTO granted patents and 1 published patent application and 1 EPO patent. Top assignees: Hitachi, Ltd., Hitachi Industrial Equipment Systems Co., Ltd.. Active years: 2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryoji Kawai. Retrieved from https://idiyas.com/inventor/ryoji-kawai

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

USPTO Granted Patents = 3 

% Patents Active = 100.0

 

Average Co-Inventor Count = 5.7

ph-index = 1

Forward Citations = 1(Granted Patents)


Company Filing History:


Years Active: 2021

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3 patents (USPTO):Explore Patents

Title: Ryoji Kawai: Innovator in Fluid Machinery and Air Compression

Introduction

Ryoji Kawai is a notable inventor based in Tokyo, Japan. He has made significant contributions to the fields of fluid machinery and air compression. With a total of 3 patents, Kawai's work reflects his commitment to innovation and efficiency in engineering.

Latest Patents

One of Kawai's latest patents is a fluid machine designed to enhance the dispersion of liquid within a working chamber. This machine features a screw rotor and a casing that accommodates the rotor. The innovative liquid supply section allows for extensive dispersion of liquid in the longitudinal direction of the screw rotor's tooth groove, improving the machine's overall performance.

Another significant invention is an air compressor that focuses on maintaining an optimal discharge air temperature while promoting energy efficiency. This air compressor includes a complex system of air and oil circulation lines, ensuring effective lubrication and cooling. The design incorporates a blower for air circulation and a control valve to manage the lubricating oil inflow, showcasing Kawai's attention to detail and functionality.

Career Highlights

Throughout his career, Ryoji Kawai has worked with prominent companies such as Hitachi, Ltd. and Hitachi Industrial Equipment Systems Co., Ltd. His experience in these organizations has undoubtedly contributed to his expertise and innovative capabilities in the engineering sector.

Collaborations

Kawai has collaborated with talented individuals in his field, including Takeshi Tsuchiya and Masanao Kotani. These partnerships have likely fostered a creative environment that encourages the development of groundbreaking technologies.

Conclusion

Ryoji Kawai's contributions to fluid machinery and air compression demonstrate his innovative spirit and dedication to engineering excellence. His patents reflect a deep understanding of mechanical systems and a commitment to improving efficiency in 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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