Hyogo, Japan

Naoki Tsuji

This inventor holds 22 USPTO granted patents, primarily in Semiconductor Devices. Top assignees: Shionogi Company Limited, Mitsubishi Denki Kabushiki Kaisha, Renesas Technology Corp.. Active years: 1981-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Naoki Tsuji. Retrieved from https://idiyas.com/inventor/naoki-tsuji

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

Calculating rank

% Patents Active = 81.8

Average Co-Inventor Count = 2.4

ph-index = 6

Forward Citations = 102(Granted Patents)


Location History:

  • Ashiya, JP (1981 - 1984)
  • Hyogo, JP (1984 - 2006)
  • Tokyo, JP (2002 - 2022)

Company Filing History:


Years Active: 1981-2022

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Areas of Expertise:
Contact Lens
Toric Contact Lens
Semiconductor Memory Device
Non-volatile Memory
Manufacturing Method
Antibiotics
Glycopeptide Antibiotics
Carbapenem Derivatives
Structural Defects
Peripheral Circuit
Transistor Design
22 patents (USPTO):Explore Patents

Title: Innovations in Contact Lens Technology: The Journey of Naoki Tsuji

Introduction

Naoki Tsuji, a distinguished inventor located in Hyogo, Japan, has made significant contributions to the field of contact lens technology. With an impressive portfolio of 22 patents, his innovations have focused on enhancing the design and manufacturing processes of contact lenses to improve user experience and performance.

Latest Patents

Among his latest inventions is a method for manufacturing a contact lens that features a uniquely structured front surface divided into several critical sections, including an optical portion and two smoothing portions. This innovative design ensures mirror image symmetry, which optimizes both aesthetics and functionality. Additionally, Tsuji has developed a toric contact lens featuring a prism ballast structure that defines various areas on the lens surface, contributing to its unique refractive properties and comfort for the wearer.

Career Highlights

Tsuji's career has seen collaborations with prominent companies, including Shionogi & Company Limited and Mitsubishi Denki. His work has consistently demonstrated a commitment to advancing optical technology, leading to the development of numerous cutting-edge products that cater to the needs of consumers and healthcare professionals.

Collaborations

Throughout his career, Naoki Tsuji has worked alongside notable colleagues, such as Eiji Kondo and Kentaro Tanaka. Their collaborations have played a crucial role in refining his inventions and pushing the boundaries of what's possible in contact lens design.

Conclusion

Naoki Tsuji's dedication to innovation in the field of contact lenses has not only resulted in a remarkable number of patents but has also significantly impacted the industry. His advancements in lens design and manufacturing methods continue to shape the future of optical solutions, providing consumers with enhanced comfort and clearer vision.

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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