Aichi, Japan

Ryuzaburo Otsuka

This inventor holds 1 USPTO granted patent. Top assignees: Daiho Construction Co., Ltd., Hitachi Construction Machinery Co., Ltd., Ishikawajima-Harima Kukogyo K.k.. Active years: 1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryuzaburo Otsuka. Retrieved from https://idiyas.com/inventor/ryuzaburo-otsuka

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


% Patents Active = 100.0

Average Co-Inventor Count = 6.0

ph-index = 1

Forward Citations = 4(Granted Patents)


Company Filing History:


Years Active: 1990

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1 patent (USPTO):Explore Patents

Title: The Innovative Mind of Ryuzaburo Otsuka

Introduction

Ryuzaburo Otsuka is a notable inventor based in Aichi, Japan, recognized for his contributions to the field of engineering and machinery. With a focus on enhancing the efficiency of construction equipment, he has made significant strides in developing innovative solutions to complex engineering challenges. His work, particularly in the control systems for multi-cutter shield machines, showcases his technical expertise and inventive spirit.

Latest Patents

Otsuka holds a patent for a "Control System for Synchronous Rotation of Cutter Heads." This innovative system is designed for use in multi-cutter shield machines, where synchronization between cutter heads is crucial for effective operation. The design allows for the cutter heads to be positioned in a common plane, with a specific arrangement of distances between their centers, optimizing their performance while minimizing interference. This control system utilizes electric drive systems, incorporating multiple motors with reduction gears, ensuring precise control over each cutter head's rotation. The system accounts for varying excavating and rotating resistances, maintaining alignment and efficiency during operation.

Career Highlights

Throughout his career, Ryuzaburo Otsuka has worked with esteemed companies such as Ishikawajima-Harima Heavy Industries Co., Ltd. and Hitachi Construction Machinery Co., Ltd. These positions have provided him with valuable experience and insights into the complex world of construction machinery and engineering applications. His innovative ideas have had a lasting impact on the industry, particularly in enhancing the functionality and reliability of construction equipment.

Collaborations

Throughout his journey as an inventor, Otsuka has collaborated with notable professionals, including Hidetsugu Yamazaki and Takashi Moro. These partnerships have allowed him to merge ideas and skills, contributing to the development of advanced engineering solutions. Collaborating with fellow experts fosters an environment of creativity and innovation, furthering the potential for breakthrough inventions in their field.

Conclusion

Ryuzaburo Otsuka stands out as a significant figure in the realm of inventions, particularly with his patent on the control system for cutter heads in shield machines. His work exemplifies the power of innovation in engineering, proving that thoughtful design can lead to more efficient and effective construction processes. As technology continues to evolve, inventors like Otsuka will remain pivotal in driving the industry forward.

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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