Yokohama, Japan

Norihiko Shinkai

This inventor holds 2 USPTO granted patents. Top assignee: Asahi Glass Company, Limited. Active years: 1978-1988.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Norihiko Shinkai. Retrieved from https://idiyas.com/inventor/norihiko-shinkai

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 2.7

ph-index = 2

Forward Citations = 43(Granted Patents)


Location History:

  • Yokohama, JA (1978)
  • Kanagawa, JP (1988)

Company Filing History:


Years Active: 1978-1988

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2 patents (USPTO):Explore Patents

Title: Norihiko Shinkai: Innovator in Photomask Technology and Glass Tempering

Introduction

Norihiko Shinkai is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the fields of photomask technology and glass tempering. With a total of 2 patents to his name, Shinkai's work has had a notable impact on the industry.

Latest Patents

Shinkai's latest patents include innovations in photomask blanks and methods for tempering glass products. The first patent describes a photomask blank that comprises a transparent substrate and at least two layers, including a masking layer and an antireflection layer. The masking layer is a chromium masking layer containing more than 25% by atomic ratio of nitrogen, while the antireflection layer is a chromium oxide antireflection layer with a similar nitrogen content. The second patent outlines a method of tempering glass products through a heat treatment process. This method involves quenching the glass, which is heated above its strain point but below its softening point, by dipping it into a liquid coolant while applying ultrasonic vibration to either the liquid coolant or the glass product.

Career Highlights

Norihiko Shinkai is currently employed at Asahi Glass Company, Limited, where he continues to develop innovative solutions in glass technology. His expertise in photomask technology and glass tempering has positioned him as a key figure in his field.

Collaborations

Shinkai has collaborated with notable colleagues, including Junetsu Kanazawa and Kuniharu Matsumoto. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Norihiko Shinkai's contributions to photomask technology and glass tempering demonstrate his commitment to innovation. His patents reflect a deep understanding of materials and processes that enhance product performance. Shinkai's work continues to influence the industry and inspire future advancements.

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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