Nagoya, Japan

Kiyoshi Matsushima

This inventor holds 15 USPTO granted patents and 2 EPO patents. Top assignee: Ngk Insulators, Inc.. Active years: 2016-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kiyoshi Matsushima. Retrieved from https://idiyas.com/inventor/kiyoshi-matsushima

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 = 3.9

ph-index = 1

Forward Citations = 4(Granted Patents)


Company Filing History:


Years Active: 2016-2025

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15 patents (USPTO):Explore Patents

Title: Kiyoshi Matsushima: Innovator in Semiconductor Technology

Introduction

Kiyoshi Matsushima is a prominent inventor based in Nagoya, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 15 patents. His work focuses on advanced materials that enhance the performance of semiconductor devices.

Latest Patents

Matsushima's latest patents include a SiC composite substrate and a composite substrate for semiconductor devices. The SiC composite substrate features a biaxially-oriented SiC layer, where SiC is oriented in both the c-axis and a-axis directions. This innovative substrate also includes a SiC polycrystalline layer on one surface, with pores present in the composite structure. Another notable patent is for a rare earth-containing SiC substrate, which incorporates a rare earth element and aluminum. The concentrations of these elements are precisely defined, enhancing the substrate's properties for semiconductor applications.

Career Highlights

Throughout his career, Matsushima has worked with notable companies such as NGK Insulators, Inc. and NGK Insulators, Ltd. His experience in these organizations has allowed him to develop and refine his expertise in semiconductor materials and technologies.

Collaborations

Matsushima has collaborated with several talented individuals in his field, including Morimichi Watanabe and Kei Sato. These partnerships have contributed to the advancement of his research and the successful development of his patented technologies.

Conclusion

Kiyoshi Matsushima is a key figure in the semiconductor industry, known for his innovative patents and contributions to material science. His work continues to influence the development of advanced semiconductor devices, showcasing the importance of innovation in technology.

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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