Tama, Japan

Tokundo Yamaguchi

This inventor holds 1 USPTO granted patent. Top assignee: Sony Corporation. Active years: 1985.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tokundo Yamaguchi. Retrieved from https://idiyas.com/inventor/tokundo-yamaguchi

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 = 3.0

ph-index = 1

Forward Citations = 12(Granted Patents)


Company Filing History:


Years Active: 1985

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1 patent (USPTO):Explore Patents

Title: The Innovations of Tokundo Yamaguchi

Introduction

Tokundo Yamaguchi is a notable inventor based in Tama, Japan. He is recognized for his contributions to the field of technology, particularly in the development of magnetic tape cassettes. His innovative approach has led to the creation of a unique product that has impacted the audio and data storage industries.

Latest Patents

Yamaguchi holds a patent for a magnetic tape cassette. This invention features a tape cassette designed to hold a magnetic tape, which consists of an upper half and a lower half that define a cassette case. Additionally, a tape guide is located within the cassette, with at least one component made of material containing ceramics. This innovative design enhances the durability and functionality of the cassette.

Career Highlights

Throughout his career, Tokundo Yamaguchi has been associated with Sony Corporation, a leading company in the electronics industry. His work at Sony has allowed him to collaborate with other talented individuals and contribute to groundbreaking technologies.

Collaborations

Yamaguchi has worked alongside notable colleagues such as Masanori Kimizuka and Isao Kawashima. Their combined expertise has fostered an environment of innovation and creativity within their projects.

Conclusion

Tokundo Yamaguchi's contributions to the field of technology, particularly through his patent for a magnetic tape cassette, highlight his role as an influential inventor. His work continues to inspire advancements in audio and data storage solutions.

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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