Etsuji Matsuyama

This inventor holds 9 USPTO granted patents and 5 published patent applications, plus 2 CIPO patents and 2 EPO patents. Top assignee: Mitsubishi Electric Corporation. Active years: 2013-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Etsuji Matsuyama. Retrieved from https://idiyas.com/inventor/etsuji-matsuyama

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

USPTO Granted Patents = 9 (Patent Applications = 5)

% Patents Active = 77.8

CIPO Patents = 2

EPO Patents = 2 (Patent Applications = 2)

Average Co-Inventor Count = 1.7

ph-index = 1

Forward Citations = 3(Granted Patents)

Company Filing History:

9 out of 16,602

Mitsubishi Electric Corporation

patents

Years Active: 2013-2026

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9 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12741621 - Slip/skid discrimination device, brake control system, and slip/skid discrimination method (2026-09-22),

2. 12654752 - Wheel tread roughness estimation device and wheel tread roughness estimation method (2026-06-16),

3. 12637046 - Brake control system and brake control method (2026-05-26),

4. 12240509 - Failure determination device, brake control device, and failure determination method (2025-03-04),

5. 12122338 - Brake control system, onboard device control system, brake control method, and onboard device control method (2024-10-22),

6. 9158618 - Memory diagnostic method, device, and non-transitory computer-readable storage medium for diagnosing a memory used by a process during execution of the process (2015-10-13),

7. 8914214 - Brake pressure computing apparatus, brake control system, and non-transitory computer-readable memory medium (2014-12-16),

8. 8646853 - Train braking device (2014-02-11),

9. 8457818 - Train slide control device and train slide control method (2013-06-04),

Title: Etsuji Matsuyama: Innovator in Vehicle Control Technologies

Introduction

Etsuji Matsuyama is a prominent inventor based in Chiyoda-ku, Japan. He has made significant contributions to the field of vehicle control technologies, holding a total of six patents. His work focuses on enhancing the safety and efficiency of vehicle systems, particularly in the railway sector.

Latest Patents

Matsuyama's latest patents include a failure determination device and a brake control device. The failure determination device is designed to acquire pressure values from air springs in vehicle bogies. It features a compensator that adjusts these pressure values based on the vehicle's position, allowing for the determination of any failures in the air springs. The brake control device, on the other hand, is intended for use in railroad cars. It includes a brake command unit that outputs commands through two different communication methods, ensuring precise control of the braking system.

Career Highlights

Etsuji Matsuyama is currently employed at Mitsubishi Electric Corporation, where he continues to innovate in the field of vehicle control systems. His work has been instrumental in developing technologies that improve the reliability and safety of transportation systems.

Collaborations

Matsuyama has collaborated with notable colleagues such as Yasuharu Itano and Hiroshi Yamada. These partnerships have contributed to the advancement of his projects and the successful implementation of his inventions.

Conclusion

Etsuji Matsuyama's contributions to vehicle control technologies exemplify his dedication to innovation and safety in transportation. His patents reflect a commitment to improving the functionality and reliability of vehicle systems.

Profile summary based on public USPTO records.