Tokyo, Japan

Seiichi Kumagai

This inventor holds 3 USPTO granted patents. Top assignees: Mitsubishi Electric Building Solutions Corporation, Mitsubishi Electric Corporation. Active years: 2022-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Seiichi Kumagai. Retrieved from https://idiyas.com/inventor/seiichi-kumagai-etaw2nbf

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

Calculating rank

% Patents Active = 66.7

Average Co-Inventor Count = 6.0

ph-index = 2

Forward Citations = 18(Granted Patents)


Company Filing History:


Years Active: 2022-2026

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3 patents (USPTO):Explore Patents

Title: Seiichi Kumagai: Innovator in Elevator Technology

Introduction

Seiichi Kumagai is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of elevator technology, holding a total of 3 patents. His work focuses on enhancing the safety and efficiency of elevator systems.

Latest Patents

One of his latest innovations is the elevator rope tension measurement system. This system is designed to reduce measurement error when quantitatively assessing the tension of an elevator rope. It includes a vibration waveform collection unit that gathers the vibration waveform of the elevator rope. Additionally, a frequency calculation unit selects a method for calculating the frequency of the collected vibration waveform based on a calculated measurement resolution.

Another significant invention is a display screen with a graphical user interface. This innovation aims to improve user interaction and functionality in elevator systems.

Career Highlights

Seiichi Kumagai has worked with prominent companies such as Mitsubishi Electric Corporation and Mitsubishi Electric Building Solutions Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in elevator technology.

Collaborations

Throughout his career, Kumagai has collaborated with talented individuals, including Takaya Taniguchi and Takuya Hashiguchi. These partnerships have contributed to the successful development of his inventions.

Conclusion

Seiichi Kumagai is a distinguished inventor whose work in elevator technology has led to valuable innovations. His patents reflect his commitment to improving safety and efficiency in elevator systems.

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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