Yokohama, Japan

Masaharu Tsunekawa

This inventor holds 2 USPTO granted patents. Top assignee: Victor Company of Japan, Limited. Active years: 1982-1987.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaharu Tsunekawa. Retrieved from https://idiyas.com/inventor/masaharu-tsunekawa

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


% Patents Active = 100.0

Average Co-Inventor Count = 2.4

ph-index = 2

Forward Citations = 12(Granted Patents)


Company Filing History:


Years Active: 1982-1987

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2 patents (USPTO):Explore Patents

Title: The Innovations of Masaharu Tsunekawa

Introduction

Masaharu Tsunekawa is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of electromagnetic transducers and magnetic recording technologies. With a total of 2 patents to his name, Tsunekawa's work has had a lasting impact on video tape recording systems.

Latest Patents

Tsunekawa's latest patents include a "Multi-head transducer assembly for helical scan video tape recorders." This invention features an electromagnetic transducer assembly that comprises a nonmagnetic base and a pair of magnetic heads arranged in a specific manner to enhance the performance of helical-scan video tape recorders. Each head consists of a U-shaped core and an I-shaped core, designed to eliminate false magnetic gap effects.

Another significant patent is the "Multiple-channel rotary transformer circuit in a magnetic recording." This invention is utilized in magnetic recording and reproducing apparatuses that employ rotary structures with multiple sets of rotary magnetic heads. The rotary transformer circuit facilitates efficient signal transfer between the coils of the rotor and the stator, optimizing the recording and reproducing processes.

Career Highlights

Masaharu Tsunekawa has had a distinguished career at the Victor Company of Japan, Limited. His innovative work in the field of magnetic recording has positioned him as a key figure in the industry. His inventions have not only advanced technology but have also contributed to the evolution of video recording systems.

Collaborations

Throughout his career, Tsunekawa has collaborated with talented individuals such as Akira Hirota and Kazuhiro Niwa. These collaborations have fostered an environment of innovation and creativity, leading to the development of groundbreaking technologies.

Conclusion

Masaharu Tsunekawa's contributions to the field of electromagnetic transducers and magnetic recording technologies are noteworthy. His patents reflect a deep understanding of engineering principles and a commitment to advancing technology. His work continues to influence the industry and inspire future innovations.

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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