Shunan, Japan

Junichirou Nakashima

This inventor holds 3 USPTO granted patents, plus 1 CIPO patent. Top assignee: Tokuyama Corporation. Active years: 2011-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Junichirou Nakashima. Retrieved from https://idiyas.com/inventor/junichirou-nakashima

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



Average Co-Inventor Count = 2.6

ph-index = 1

Forward Citations = 3(Granted Patents)


Company Filing History:


Years Active: 2011-2012

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3 patents (USPTO):Explore Patents

Title: Junichirou Nakashima: Innovator in Silicon Production

Introduction

Junichirou Nakashima is a notable inventor based in Shunan, Japan. He has made significant contributions to the field of silicon production, holding a total of 3 patents. His innovative work focuses on improving the efficiency and effectiveness of silicon manufacturing processes.

Latest Patents

Nakashima's latest patents include a cylindrical vessel made of carbon and a silicon manufacturing apparatus. The cylindrical vessel is designed to be used in the production of silicon, featuring an inner surface that minimizes permeation with silicon melt and suppresses the formation of silicon carbide (SiC). This vessel is resistant to deformation, even when subjected to volumetric expansion due to silicon. The carbon material used has a bulk specific gravity of 1.8 or more, with a thermal expansion coefficient optimized for high temperatures.

The silicon manufacturing apparatus he developed allows deposited silicon to drip into a collection part by heating the reaction tube's inner surface. This design prevents the silicon melt from solidifying at the lower end of the reaction tube, ensuring a continuous production process. The apparatus employs high-frequency heating coils and temperature lowering prevention means to maintain optimal conditions for silicon production.

Career Highlights

Junichirou Nakashima is currently associated with Tokuyama Corporation, where he continues to innovate in the field of silicon production. His work has been instrumental in advancing the technology used in this critical industry.

Collaborations

Nakashima has collaborated with notable coworkers, including Satoru Wakamatsu and Manabu Sakita. Their combined expertise has contributed to the successful development of innovative solutions in silicon manufacturing.

Conclusion

Junichirou Nakashima's contributions to silicon production through his patents and collaborative efforts highlight his role as a key innovator in the field. His work continues to influence the efficiency and effectiveness of silicon manufacturing processes.

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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