Kamakura, Japan

Yasutomo Seki

This inventor holds 1 USPTO granted patent. Top assignee: Nippon Kogaku K.k.. Active years: 1985.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasutomo Seki. Retrieved from https://idiyas.com/inventor/yasutomo-seki

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 = 4.0

ph-index = 1

Forward Citations = 13(Granted Patents)


Company Filing History:


Years Active: 1985

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1 patent (USPTO):Explore Patents

Title: Yasutomo Seki: Innovator in Camera Technology

Introduction

Yasutomo Seki is a notable inventor based in Kamakura, Japan. He has made significant contributions to the field of camera technology, particularly with his innovative designs that enhance the functionality of photographic equipment.

Latest Patents

One of Seki's most recognized patents is for a focusing screen of a camera. This invention features a focusing screen capable of transmitting light and is strategically placed between an objective lens and an eye-piece. The screen is designed with a surface that contains a multitude of substantially hemispherical faces of irregular sizes, arranged in an irregular pattern. The radius of curvature of these hemispherical faces ranges from 8.5 to 52.8 micrometers, while their height varies between 1.5 to 3.6 micrometers. This innovative design aims to improve the clarity and precision of the camera's focusing mechanism.

Career Highlights

Yasutomo Seki is associated with Nippon Kogaku K.K., a company renowned for its advancements in optical technology. His work at this esteemed organization has allowed him to explore and develop cutting-edge solutions in the realm of photography.

Collaborations

Throughout his career, Seki has collaborated with talented individuals such as Toshio Akiyama and Norio Nakabayashi. These partnerships have fostered a creative environment that has led to the development of innovative technologies in the field.

Conclusion

Yasutomo Seki's contributions to camera technology, particularly through his patent for a focusing screen, highlight his role as an influential inventor in the industry. His work continues to impact the way photography is approached and executed today.

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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