Ibaraki, Japan

Eiji Tohyama

This inventor holds 1 USPTO granted patent. Top assignee: Hitachi, Ltd.. Active years: 1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Eiji Tohyama. Retrieved from https://idiyas.com/inventor/eiji-tohyama

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 = 9.0

ph-index = 1

Forward Citations = 25(Granted Patents)


Company Filing History:


Years Active: 1993

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1 patent (USPTO):Explore Patents

Title: Eiji Tohyama: Innovator in Process Control Technology

Introduction

Eiji Tohyama is a notable inventor based in Ibaraki, Japan. He has made significant contributions to the field of process control technology. His innovative approach has led to the development of a unique patent that enhances the efficiency of process control systems.

Latest Patents

Eiji Tohyama holds a patent for a "Process control apparatus and method for adjustment of operating." This invention focuses on a process control apparatus and system that observes the waveform of the deviation between a set point and the process controlled variable. The system adjusts operating parameters according to a predetermined adjustment rule, ensuring that the process controlled variable quickly aligns with the set point. This innovation is particularly valuable as it maintains the integrity of the waveform, even when influenced by external factors.

Career Highlights

Eiji Tohyama is associated with Hitachi, Ltd., a leading company in technology and innovation. His work at Hitachi has allowed him to apply his inventive skills in a collaborative environment, contributing to advancements in process control systems.

Collaborations

Throughout his career, Eiji has worked alongside talented colleagues such as Hiroshi Matsumoto and Masahide Nomura. Their collaborative efforts have fostered an environment of innovation and creativity, leading to significant advancements in their field.

Conclusion

Eiji Tohyama's contributions to process control technology exemplify the impact of innovative thinking in engineering. His patent and work at Hitachi, Ltd. highlight the importance of collaboration in driving technological advancements.

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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