Fujisawa, Japan

Toyoki Kawashima

This inventor holds 1 USPTO granted patent. Top assignee: Nihon Radiator Co., Ltd.. Active years: 1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toyoki Kawashima. Retrieved from https://idiyas.com/inventor/toyoki-kawashima

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 = 2.0

ph-index = 1

Forward Citations = 19(Granted Patents)


Company Filing History:


Years Active: 1990

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1 patent (USPTO):Explore Patents

Title: The Innovative Contributions of Toyoki Kawashima

Introduction

Toyoki Kawashima is a notable inventor based in Fujisawa, Japan. He has made significant contributions to the field of automotive technology, particularly in the design of mufflers. His innovative approach has led to the development of a unique muffler system that enhances vehicle performance and efficiency.

Latest Patents

Kawashima holds a patent for a muffler that includes a first expansion chamber, a second expansion chamber, a resonator chamber, and an inlet pipe with both a first and second open end. The design allows for effective communication between the various chambers, optimizing sound reduction and exhaust flow. The return pipe, which is inserted into the resonator chamber and furnished with a plug, further enhances the muffler's functionality. This innovative design is a testament to Kawashima's expertise in automotive engineering.

Career Highlights

Kawashima is associated with Nihon Radiator Co., Ltd., where he has contributed to various projects aimed at improving automotive components. His work has been instrumental in advancing muffler technology, making vehicles quieter and more efficient. His dedication to innovation has earned him recognition in the industry.

Collaborations

Kawashima has collaborated with fellow inventor Katsushige Tani, working together to push the boundaries of automotive technology. Their partnership has led to the exploration of new ideas and solutions in muffler design.

Conclusion

Toyoki Kawashima's contributions to muffler technology exemplify the spirit of innovation in the automotive industry. His patented designs reflect a commitment to enhancing vehicle performance and reducing noise pollution. His work continues to influence the field, paving the way for future advancements.

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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