Tokyo, Japan

Keizaburo Tozawa

This inventor holds 1 USPTO granted patent. Top assignee: Sony Corporation. Active years: 1977.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keizaburo Tozawa. Retrieved from https://idiyas.com/inventor/keizaburo-tozawa

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 = 5.0

ph-index = 1

Forward Citations = 10(Granted Patents)


Company Filing History:


Years Active: 1977

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1 patent (USPTO):Explore Patents

Title: Keizaburo Tozawa: Innovator in Magnetic Tape Storage Solutions

Introduction

Keizaburo Tozawa is a notable inventor based in Tokyo, Japan. He is recognized for his innovative contributions to the field of storage solutions, particularly for magnetic tape cassettes. His work has significantly impacted the way these storage devices are designed and utilized.

Latest Patents

Tozawa holds a patent for a storage receptacle specifically designed for magnetic tape cassettes. This invention features a housing with spaced apart, parallel side walls that define an opening. The holder is pivotally connected to the housing, allowing it to swing between an open position for receiving and relinquishing a cassette and a closed position for enclosing the cassette. The design ensures that the holder's pivotal connection provides a fulcrum that is strategically placed to facilitate ease of use. This innovative approach allows for a compact design while ensuring functionality.

Career Highlights

Tozawa has made significant strides in his career, particularly through his work at Sony Corporation. His contributions have not only advanced the technology behind magnetic tape storage but have also set a standard for future innovations in the industry. His patent reflects a deep understanding of both engineering and user experience.

Collaborations

Tozawa has collaborated with notable colleagues such as Hideo Amatsu and Shinichiro Takahashi. These partnerships have fostered a creative environment that has led to the development of cutting-edge technologies in storage solutions.

Conclusion

Keizaburo Tozawa's innovative work in the design of storage receptacles for magnetic tape cassettes showcases his expertise and commitment to advancing technology. His contributions continue to influence the industry and inspire future inventors.

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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