Hamamatsu, Japan

Riichi Kitajima

This inventor holds 1 USPTO granted patent. Top assignee: Kabushiki Kaisha Kawai Gakki Seisakusho. Active years: 1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Riichi Kitajima. Retrieved from https://idiyas.com/inventor/riichi-kitajima

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 = 1(Granted Patents)


Company Filing History:


Years Active: 1999

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1 patent (USPTO):Explore Patents

Title: The Innovative Contributions of Riichi Kitajima

Introduction

Riichi Kitajima is a notable inventor based in Hamamatsu, Japan. He has made significant contributions to the field of musical instrument manufacturing, particularly in piano technology. His innovative approach has led to the development of a unique hammer head design that enhances the performance and durability of pianos.

Latest Patents

One of Kitajima's most recognized patents is for a hammer head for a piano and the method of manufacturing the same. This invention is characterized by its simple structure, which is capable of maintaining a humidity preventive effect for a longer time. The hammer head comprises a hammer body that includes a hammer felt with two flat surfaces that are substantially parallel to each other. Additionally, it features a string striking portion designed for optimal string interaction. A humidity preventive film is adhered to the flat surfaces of the hammer felt, ensuring enhanced longevity and performance. This innovative design not only improves the quality of sound produced by the piano but also offers a cost-effective manufacturing method.

Career Highlights

Riichi Kitajima is associated with Kabushiki Kaisha Kawai Gakki Seisakusho, a prominent company in the musical instrument industry. His work at this company has allowed him to focus on developing innovative solutions that address common challenges faced by piano manufacturers and musicians alike.

Collaborations

Kitajima has collaborated with Muneo Ishida, a fellow inventor, to further enhance the development of piano technologies. Their partnership has fostered a creative environment that encourages the exploration of new ideas and solutions in the field.

Conclusion

Riichi Kitajima's contributions to piano technology exemplify the spirit of innovation in the musical instrument industry. His patented designs and collaborative efforts continue to influence the way pianos are manufactured and played.

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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