Nara, Japan

Kiyotoshi Nakagawa

This inventor holds 5 USPTO granted patents. Top assignee: Sharp Kabushiki Kaisha Corporation. Active years: 1986-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kiyotoshi Nakagawa. Retrieved from https://idiyas.com/inventor/kiyotoshi-nakagawa

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 = 1.9

ph-index = 5

Forward Citations = 132(Granted Patents)


Location History:

  • Shiki, JP (1986)
  • Nara, JP (1988 - 1990)
  • Fukuyama, JP (1990)

Company Filing History:


Years Active: 1986-1990

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5 patents (USPTO):Explore Patents

Title: Kiyotoshi Nakagawa: Innovator in Semiconductor Technology

Introduction

Kiyotoshi Nakagawa is a prominent inventor based in Nara, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 5 patents. His work primarily focuses on high voltage MOS transistors and field-effect semiconductor devices.

Latest Patents

Among his latest patents is a high voltage MOS transistor, which features a metal oxide semiconductor device designed with a covering element that protects the channel region. This covering element is interposed with an insulating layer and is connected to at least one electrode, ensuring that the electrical level remains fixed. Another notable patent is for a high voltage MOS field-effect semiconductor device. This device comprises a high voltage first MOS field-effect transistor and a conventional second MOS field-effect transistor, which operates at a lower voltage. The semiconductor substrate is covered with a conductor layer in the region where the conventional transistor is located.

Career Highlights

Kiyotoshi Nakagawa has worked with notable companies such as Sharp Corporation. His experience in these organizations has allowed him to develop innovative technologies that have advanced the semiconductor industry.

Collaborations

Throughout his career, Nakagawa has collaborated with esteemed colleagues, including Tsutomu Ashida and Katsumasa Fujii. These partnerships have contributed to the success of his projects and the development of new technologies.

Conclusion

Kiyotoshi Nakagawa's contributions to semiconductor technology through his patents and collaborations highlight his role as an influential inventor in the field. His innovative work continues to impact the industry significantly.

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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