Oita, Japan

Seiji Nakagawa

This inventor holds 6 USPTO granted patents. Top assignee: Kabushiki Kaisha Toshiba. Active years: 1999-2011.

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

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


% Patents Active = 50.0

Average Co-Inventor Count = 1.4

ph-index = 3

Forward Citations = 55(Granted Patents)


Location History:

  • Yokohama, JP (1999 - 2004)
  • Danbury, CT (US) (2007)
  • Akishima, JP (2009)
  • Oita, JP (2010 - 2011)

Company Filing History:


Years Active: 1999-2011

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6 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Seiji Nakagawa

Introduction

Seiji Nakagawa, a prominent inventor based in Oita, Japan, has made significant strides in the field of semiconductor technology. With a total of six patents to his name, Nakagawa's work addresses key challenges in the manufacturing processes of semiconductors, enhancing efficiency and effectiveness.

Latest Patents

Among his latest innovations is an oven designed specifically for semiconductor wafers. This oven is engineered to evenly heat the semiconductor wafers, accommodating any warping that may occur during the heating process. By incorporating a heating surface divided into multiple independent zones, the oven adapts to the unpredictable nature of each wafer's warping, ensuring uniform heating.

Another notable patent focuses on a coating process and equipment that significantly reduces resist consumption during the coating of semiconductor wafers. This innovative system maintains a wet condition on the outer portion of the wafer, facilitating the easy spreading of photo-resist or anti-reflective coatings. The system includes a movable arm with nozzles that dispense pre-wet solvent and coatings sequentially as the wafer rotates, resulting in fewer coating defects and decreased usage of materials.

Career Highlights

Seiji Nakagawa is affiliated with Kabushiki Kaisha Toshiba, a leader in technology and electronics, where he applies his expertise in semiconductor development. His contributions to the company have reinforced Toshiba's position in the global semiconductor market.

Collaborations

Nakagawa often collaborates with fellow innovators, including Minoru Okamoto and Yasushi Ito. Together, they explore various aspects of semiconductor technology, enhancing the research and development efforts within their organization.

Conclusion

Seiji Nakagawa's inventive prowess has undoubtedly left a mark on the semiconductor industry. Through his patents, he has tackled complex challenges, delivering solutions that promote efficiency and sustainability. His ongoing contributions, alongside collaborations with skilled colleagues, continue to inspire advancements in 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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