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For the Inventor, By the Inventor

Hiroshima, Japan

Takuro Shigemura

This inventor holds 5 USPTO granted patents. Top assignee: Mazda Motor Corporation. Active years: 1988-1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takuro Shigemura. Retrieved from https://idiyas.com/inventor/takuro-shigemura

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

Calculating rank
USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 4.9

ph-index = 5

Forward Citations = 64(Granted Patents)


Company Filing History:

goldMedal5 out of 4,753 
 
Mazda Motor Corporation
 patents

Years Active: 1988-1993

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5 patents (USPTO):Explore Patents
1. 5273014 - Intake system for engine (1993-12-28),
2. 5211081 - Control system for automatic transmission (1993-05-18),
3. 4944199 - Control apparatus for a vehicle engine equipped with an automatic (1990-07-31),
4. 4926816 - Rotary piston engine (1990-05-22),
5. 4774918 - Engine lubricating system (1988-10-04),

Title: Takuro Shigemura: Innovator in Engine and Transmission Technologies

Introduction

Takuro Shigemura is a prominent inventor based in Hiroshima, Japan. He has made significant contributions to the field of automotive engineering, particularly in engine and transmission systems. With a total of 5 patents to his name, Shigemura continues to push the boundaries of innovation in the automotive industry.

Latest Patents

One of his latest patents is an intake system for engines. This system features a plurality of primary and secondary discrete intake passages that communicate with the engine's cylinders. The primary discrete intake passage is equipped with a primary valve member that can be selectively positioned to control airflow. Additionally, the secondary discrete intake passage has a secondary valve member that operates similarly, allowing for optimized engine performance.

Another notable patent is a control system for automatic transmissions. This system includes a main transmission and a subtransmission, with hydraulic shift operations. It comprises devices for adjusting gear ratio advances during shift operations, ensuring that both the main and subtransmission achieve predetermined target gear ratios simultaneously.

Career Highlights

Shigemura is currently employed at Mazda Motor Corporation, where he applies his expertise in automotive technologies. His work has been instrumental in developing advanced systems that enhance vehicle performance and efficiency.

Collaborations

Throughout his career, Shigemura has collaborated with talented individuals such as Tatsuya Kita and Noriaki Mitobe. These partnerships have fostered innovation and contributed to the success of various projects within the automotive sector.

Conclusion

Takuro Shigemura is a distinguished inventor whose work in engine and transmission technologies has made a lasting impact on the automotive industry. His innovative patents and collaborations continue to drive advancements in vehicle performance and efficiency.

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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