Ibaraki, Japan

Hiroshi Mizushima

This inventor holds 1 USPTO granted patent. Top assignee: Hitachi Construction Machinery Co., Ltd.. Active years: 1985.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroshi Mizushima. Retrieved from https://idiyas.com/inventor/hiroshi-mizushima-x87sa2fc

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 = 2.0

ph-index = 1

Forward Citations = 16(Granted Patents)


Company Filing History:


Years Active: 1985

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1 patent (USPTO):Explore Patents

Title: Hiroshi Mizushima: Innovator in Hydraulic Circuit Systems

Introduction

Hiroshi Mizushima is a notable inventor based in Ibaraki, Japan. He has made significant contributions to the field of hydraulic systems, particularly in construction machinery. His innovative designs have paved the way for advancements in hydraulic circuit technology.

Latest Patents

Mizushima holds a patent for a hydraulic circuit system designed for construction machines. This system features a first and second hydraulic circuit, along with a bypass circuit that connects the two. The first circuit includes a hydraulic pump and a valve group with multiple directional control valves, while the second circuit operates similarly with its own pump and valve group. The system is designed to drive various actuators using hydraulic fluid supplied from both pumps. The bypass circuit allows for efficient communication between the travel valves, enhancing the overall functionality of the construction machinery.

Career Highlights

Hiroshi Mizushima has dedicated his career to improving hydraulic systems in construction equipment. His work at Hitachi Construction Machinery Co., Ltd. has been instrumental in developing more efficient and reliable machinery. His innovative approach has led to the creation of advanced hydraulic systems that improve performance and safety in construction operations.

Collaborations

Mizushima has collaborated with his coworker, Nobuya Okabe, to further enhance the development of hydraulic technologies. Their teamwork has resulted in innovative solutions that address the challenges faced in the construction industry.

Conclusion

Hiroshi Mizushima's contributions to hydraulic circuit systems have significantly impacted the construction machinery sector. His innovative designs and collaborative efforts continue to drive advancements in this essential field.

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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