Koichi Yamamoto

This inventor holds 17 USPTO granted patents, primarily in Automatic Transmission Control. Top assignee: Mazda Motor Corporation. Active years: 1986-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koichi Yamamoto. Retrieved from https://idiyas.com/inventor/koichi-yamamoto-2oumukmx

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

USPTO Granted Patents = 17

% Patents Active = 94.1

Average Co-Inventor Count = 3.0

ph-index = 9

Forward Citations = 202(Granted Patents)

Company Filing History:

17 out of 4,753

Mazda Motor Corporation

patents

Years Active: 1986-2007

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Areas of Expertise:

Vibration Suppression

Control System

Automatic Transmission

Hydraulic Control

Gear Shifting

Four-Wheel Drive

Engine Control

Speed Change Control

Fail-Safe System

Clutch Control

Motor Vehicle

Transversely-Disposed Engine

17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7216736 - Vibration suppression device of power train (2007-05-15),

2. 5810694 - Control system for automatic transmission (1998-09-22),

3. 5785628 - Automatic transmission control system (1998-07-28),

4. 5772550 - Automatic transmission control system (1998-06-30),

5. 5725455 - Forward clutch and lockup clutch control in an automatic transmission (1998-03-10),

6. 5665020 - Automatic transmission control system (1997-09-09),

7. 5143167 - Four-wheel-drive motor vehicle of transversely-disposed engine type (1992-09-01),

8. 5078229 - Four-wheel-drive motor vehicle of transversely-disposed engine type (1992-01-07),

9. 5064017 - Four-wheel drive motor vehicle of transversely-disposed engine type (1991-11-12),

10. 5036728 - Engine control system for vehicle with automatic transmission (1991-08-06),

11. 4930375 - Hydraulic control system for automatic transmission (1990-06-05),

12. 4831900 - System for controlling rate of speed change in automatic transmission (1989-05-23),

13. 4787258 - Control systems for automatic transmissions (1988-11-29),

14. 4694709 - Control of a vehicle automatic transmission (1987-09-22),

15. 4667541 - Fail-safe gear-shifting control system for an automatic transmission (1987-05-26),

Title: Koichi Yamamoto: Innovator in Automotive Technology

Introduction

Koichi Yamamoto is a prominent inventor based in Hiroshima, Japan. He has made significant contributions to the automotive industry, particularly through his work at Mazda Motor Corporation. With a total of 17 patents to his name, Yamamoto has demonstrated a commitment to innovation and excellence in engineering.

Latest Patents

Yamamoto's latest patents include a vibration suppression device for power trains and a control system for automatic transmissions. The vibration suppression device is designed to enhance the performance of a heat exchanger that facilitates heat exchange between lubricating oil and engine coolant. This device not only suppresses vibrations effectively but also contributes to weight reduction without requiring additional space. The control system for automatic transmissions features a friction coupling element that utilizes an accumulator to manage hydraulic pressure during gear shifts, ensuring smooth transitions even under low line pressure conditions.

Career Highlights

Throughout his career, Koichi Yamamoto has been instrumental in developing advanced automotive technologies. His work has not only improved vehicle performance but has also contributed to the overall safety and efficiency of modern automobiles. His innovative designs reflect a deep understanding of engineering principles and a dedication to enhancing user experience.

Collaborations

Yamamoto has collaborated with notable colleagues such as Shinya Kamada and Tomoo Sawazaki. These partnerships have fostered a creative environment that encourages the exchange of ideas and the development of groundbreaking technologies.

Conclusion

Koichi Yamamoto's contributions to the automotive industry through his patents and collaborative efforts highlight his role as a leading inventor. His innovative solutions continue to shape the future of automotive technology, making a lasting impact on the industry.

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]