Yokohama, Japan

Yoshihiro Kato

This inventor holds 7 USPTO granted patents. Top assignees: Hitachi, Ltd., Lasertec Gmbh, Hitachi Construction Machinery Co., Ltd.. Active years: 1999-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshihiro Kato. Retrieved from https://idiyas.com/inventor/yoshihiro-kato-sb0mkubp

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

Calculating rank

% Patents Active = 85.7

Average Co-Inventor Count = 3.9

ph-index = 5

Forward Citations = 78(Granted Patents)


Location History:

  • Naka, JP (2004)
  • Yokohama, JP (1999 - 2023)

Company Filing History:


Years Active: 1999-2025

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7 patents (USPTO):Explore Patents

Title: Innovations of Yoshihiro Kato

Introduction

Yoshihiro Kato is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of technology, particularly in the development of advanced inspection devices and methods for EUV masks. With a total of 7 patents to his name, Kato's work has had a substantial impact on the industry.

Latest Patents

Kato's latest patents include an EUV mask inspection device, an EUV mask inspection method, a non-transitory computer-readable medium storing an EUV mask inspection program, and an EUV mask inspection system that utilizes a gray image based on design data of a pattern. The inspection device features an image capturing unit that captures images of EUV masks, a storage unit for maintaining a database of gray images, and a processing unit that inspects the masks based on captured images. Additionally, he has developed an image pickup apparatus and a focus adjustment method that employs bending correction to enhance focusing accuracy.

Career Highlights

Throughout his career, Yoshihiro Kato has worked with notable companies such as Hitachi, Ltd. and Lasertec GmbH. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking innovations in the field.

Collaborations

Kato has collaborated with esteemed colleagues, including Akira Kojima and Michifumi Kawai. These partnerships have fostered a collaborative environment that has led to the advancement of technology in their respective fields.

Conclusion

Yoshihiro Kato's innovative work and numerous patents highlight his significant contributions to technology and engineering. His advancements in EUV mask inspection devices and methods continue to influence the industry positively.

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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