Tokyo, Japan

Junji Arai

This inventor holds 1 USPTO granted patent and 3 published patent applications. Top assignee: Sumitomo Osaka Cement Co., Ltd.. Active years: 2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Junji Arai. Retrieved from https://idiyas.com/inventor/junji-arai-nlj8v4er

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

USPTO Granted Patents = 1 

% Patents Active = 100.0

Average Co-Inventor Count = 3.0

ph-index = 1


Company Filing History:


Years Active: 2026

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1 patent (USPTO):Explore Patents

Title: Junji Arai: Innovator in Optical Waveguide Technology

Introduction

Junji Arai is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical technology, particularly through his innovative work on optical waveguide elements. His inventions aim to enhance the performance and reliability of optical devices.

Latest Patents

Junji Arai holds a patent for an optical waveguide element, which includes an optical modulation device and an optical transmission device. This invention addresses the issue of dropout of optical components due to internal stress at the joint between the optical component and the optical waveguide member. The design simplifies the manufacturing process by improving the polishing of the joining surface. The optical waveguide element features a substrate with an optical waveguide and an optical component fixed to the end surface, ensuring efficient transmission of input and output light.

Career Highlights

Arai is associated with Sumitomo Osaka Cement Co., Ltd., where he continues to develop cutting-edge optical technologies. His work has been instrumental in advancing the capabilities of optical devices, making them more robust and easier to manufacture.

Collaborations

He has collaborated with notable colleagues, including Yuki Kugimoto and Yumi Murata, contributing to various projects that enhance optical technology.

Conclusion

Junji Arai's innovative work in optical waveguide technology exemplifies the importance of advancements in this field. His contributions not only improve device performance but also streamline manufacturing processes, showcasing his impact on the industry.

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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