Tokyo, Japan

Nobuji Hasegawa

This inventor holds 3 USPTO granted patents. Top assignees: Mik Denshi Kohgyo Co., Ltd., Mitsuku Denshi Kogyo Kabushiki Kaisha, Sony Corporation. Active years: 1994-2017.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Nobuji Hasegawa. Retrieved from https://idiyas.com/inventor/nobuji-hasegawa

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 = 2.8

ph-index = 2

Forward Citations = 6(Granted Patents)


Company Filing History:


Years Active: 1994-2017

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3 patents (USPTO):Explore Patents

Title: Nobuji Hasegawa: Innovator in Electrical Engineering

Introduction

Nobuji Hasegawa is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of innovative switch and connector technologies. With a total of 3 patents to his name, Hasegawa's work has had a lasting impact on the industry.

Latest Patents

One of Hasegawa's latest inventions is the double seesaw switch. This device features two seesaw switches arranged side-by-side within a case. Each switch includes a central terminal, fixed contacts, and a moving contact that pivots to make contact with the fixed contacts. The operation body rotates to pivot the moving contact, while a leaf spring biasing part maintains the operation body in a neutral position.

Another significant invention is the rotatable electrical connector for telephone cords. This connector device consists of a case housing first and second sockets, each designed to accommodate a modular connector. The first socket is rotatable, allowing for a simple arrangement that can be mass-produced at a low cost. This innovation enhances the functionality and efficiency of telephone connections.

Career Highlights

Hasegawa has worked with prominent companies such as Sony Corporation and Mitsuku Denshi Kogyo Kabushiki Kaisha. His experience in these organizations has contributed to his expertise and the development of his patented technologies.

Collaborations

Throughout his career, Hasegawa has collaborated with talented individuals, including Muneyoshi Miyata and Shunmei Kurosawa. These partnerships have fostered innovation and creativity in his projects.

Conclusion

Nobuji Hasegawa is a distinguished inventor whose work in electrical engineering has led to valuable patents and advancements in technology. His contributions continue 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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