Tokyo, Japan

Yumiko Ishido

This inventor holds 3 USPTO granted patents and 3 published patent applications. Top assignee: Hitachi, Ltd.. Active years: 2025-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yumiko Ishido. Retrieved from https://idiyas.com/inventor/yumiko-ishido

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

USPTO Granted Patents = 3 

% Patents Active = 66.7

Average Co-Inventor Count = 6.9

ph-index = 1


Company Filing History:


Years Active: 2025-2026

Loading Chart...
3 patents (USPTO):Explore Patents

Title: Yumiko Ishido: Innovator in Train Traffic Management Systems

Introduction

Yumiko Ishido is a prominent inventor based in Tokyo, Japan. She has made significant contributions to the field of train traffic management systems. Her innovative work focuses on improving service plans for train operations, particularly in situations involving delays.

Latest Patents

Yumiko holds a patent for a service plan change assistance apparatus, which includes a decision model creation apparatus, a decision model creation program, and a train traffic management system. This invention provides a comprehensive solution for managing train delays by estimating future train service statuses and creating service plan change proposals. The system is designed to enhance the efficiency of train operations and minimize the impact of delays on passengers.

Career Highlights

Yumiko Ishido is currently employed at Hitachi, Ltd., where she applies her expertise in developing advanced technologies for train management. Her work has been instrumental in creating systems that improve the reliability and efficiency of train services. With her innovative approach, she has established herself as a key figure in the transportation technology sector.

Collaborations

Yumiko collaborates with talented colleagues, including Tsuyoshi Minakawa and Yuki Maekawa. Together, they work on various projects aimed at enhancing train traffic management and developing cutting-edge solutions for the industry.

Conclusion

Yumiko Ishido's contributions to train traffic management systems exemplify her commitment to innovation and excellence. Her patent and collaborative efforts continue to shape the future of transportation technology.

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]
Loading…