Kawasaki, Japan

Toshiyuki Kasai

This inventor holds 3 USPTO granted patents. Top assignee: Nippon Kogaku K.k.. Active years: 1976-1987.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshiyuki Kasai. Retrieved from https://idiyas.com/inventor/toshiyuki-kasai-sdtxftwf

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 = 1.7

ph-index = 2

Forward Citations = 19(Granted Patents)


Location History:

  • Kawasaki, JA (1976)
  • Matsudo, JA (1978)
  • Matsudo, JP (1987)

Company Filing History:


Years Active: 1976-1987

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3 patents (USPTO):Explore Patents

Title: Innovations by Toshiyuki Kasai

Introduction

Toshiyuki Kasai is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of optical devices, holding a total of 3 patents. His work focuses on enhancing the functionality and efficiency of photoelectric transducer devices.

Latest Patents

One of his latest inventions is an illumination apparatus for testing photoelectric transducer devices. This apparatus allows for easy switching between uniform illumination and high-luminance spot illumination at high speed. It is designed to perform various types of measurements by toggling different optical elements. The main optical system uniformly illuminates a test chart projected on a solid-state image sensor, while an auxiliary optical system provides additional light rays to achieve high-luminance spot illumination.

Another significant patent is a spectroscopic auto ellipsometer. This device measures two variables of polarized light using the principal angle of incidence method. It includes an illumination optical system, a polarizer that can be rotated, and a sample supporting table that allows for varying the angle of incidence. The ellipsometer is equipped with a photoelectric converter that transforms light intensity into electrical signals, facilitating precise measurements.

Career Highlights

Toshiyuki Kasai is currently employed at Nippon Kogaku K.K., a company renowned for its advancements in optical technology. His work has contributed to the development of innovative solutions in the field, enhancing the capabilities of optical devices.

Collaborations

He has collaborated with notable coworkers, including Norio Mizutani and Tadaaki Yamamoto. Their combined expertise has furthered the research and development of optical technologies.

Conclusion

Toshiyuki Kasai's contributions to optical technology through his patents and collaborations highlight his role as an influential inventor in the field. His innovative solutions continue to impact 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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