Chiba, Japan

Hirotsugu Marumoto

This inventor holds 6 USPTO granted patents and 2 published patent applications, plus 3 CIPO patents and 6 EPO patents. Top assignees: Sumitomo Heavy Industries, Ltd., Spiral Logic Limited. Active years: 2011-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirotsugu Marumoto. Retrieved from https://idiyas.com/inventor/hirotsugu-marumoto

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

Calculating rank
USPTO Granted Patents = 6 

% Patents Active = 83.3


 

Average Co-Inventor Count = 2.0

ph-index = 1

Forward Citations = 1(Granted Patents)


Company Filing History:


Years Active: 2011-2026

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6 patents (USPTO):Explore Patents

Title: Hirotsugu Marumoto: Innovator in Injection Molding Technology

Introduction

Hirotsugu Marumoto is a notable inventor based in Chiba, Japan. He has made significant contributions to the field of injection molding technology, holding a total of 6 patents. His innovative designs and methods have advanced the efficiency and functionality of injection molding machines.

Latest Patents

Marumoto's latest patents include an advanced injection molding machine that features a screw with an attached tag containing identification information. This tag is readable by a dedicated reading unit. The machine is equipped with a drive unit that facilitates the rotation and movement of the screw, while a control device manages the drive unit's operations. This control device ensures that the tag is moved to a reading position for identification purposes. Another significant patent involves a control method for an injection molding machine that produces a product with both a skin layer and a core layer. This method controls the temperature of the molding material for the skin layer to be higher than that of the core layer at the start of the injection process.

Career Highlights

Throughout his career, Marumoto has worked with prominent companies such as Sumitomo Heavy Industries, Ltd. and Spiral Logic Limited. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects in the injection molding sector.

Collaborations

Marumoto has collaborated with talented individuals in his field, including Munekatsu Kamiya and Masahiro Iwahashi. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Hirotsugu Marumoto's contributions to injection molding technology exemplify his innovative spirit and dedication to advancing manufacturing processes. His patents and collaborations reflect a commitment to excellence in engineering and design.

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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