Yokohama, Japan

Kyohei Murakawa

This inventor holds 6 USPTO granted patents. Top assignee: Fujitsu Corporation. Active years: 1977-1984.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kyohei Murakawa. Retrieved from https://idiyas.com/inventor/kyohei-murakawa

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 = 3.4

ph-index = 6

Forward Citations = 103(Granted Patents)


Location History:

  • Yokohama, JA (1977)
  • Yokohama, JP (1980 - 1984)

Company Filing History:


Years Active: 1977-1984

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6 patents (USPTO):Explore Patents

Title: Kyohei Murakawa: Innovator in Ceramic Substrate Technology

Introduction

Kyohei Murakawa is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of ceramic substrates, particularly in the integration of circuit technologies. With a total of 6 patents to his name, Murakawa's work has advanced the capabilities of semiconductor applications.

Latest Patents

Among his latest innovations is a ceramic substrate with an integrated circuit bonded thereon. This substrate is designed for use as a circuit substrate, consisting of 0.5 to 5.0% by weight of MgO, and 95.0 to 99.5% by weight of Al₂O₃ and SiO₂. The specific ratio of Al₂O₃ to SiO₂ ranges from 50:50 to 80:20 by weight. Another notable patent is a method of forming a ceramic circuit substrate that allows for the mounting of high integration density semiconductor elements. This method involves creating a multilayered ceramic circuit substrate with high accuracy via holes and wiring patterns, utilizing metallic conductive balls for connections.

Career Highlights

Kyohei Murakawa is currently employed at Fujitsu Corporation, where he continues to innovate in the field of ceramic substrates. His work has been instrumental in enhancing the performance and reliability of electronic components.

Collaborations

Murakawa has collaborated with notable colleagues such as Koichi Niwa and Nobuo Kamehara, contributing to various projects that push the boundaries of technology in their field.

Conclusion

Kyohei Murakawa's contributions to ceramic substrate technology exemplify the spirit of innovation. His patents and ongoing work at Fujitsu Corporation highlight his role as a key figure in advancing semiconductor 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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