Hino, Japan

Shigemasa Itoh

This inventor holds 4 USPTO granted patents. Top assignee: Konishiroku Photo Industry Co., Ltd.. Active years: 1977-1981.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shigemasa Itoh. Retrieved from https://idiyas.com/inventor/shigemasa-itoh

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 = 3.4

ph-index = 3

Forward Citations = 20(Granted Patents)


Location History:

  • Hino, JA (1977)
  • Hino, JP (1979 - 1981)

Company Filing History:


Years Active: 1977-1981

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4 patents (USPTO):Explore Patents

Title: Shigemasa Itoh: Innovator in Photographic Materials

Introduction

Shigemasa Itoh is a notable inventor based in Hino, Japan. He has made significant contributions to the field of photographic materials, holding a total of 4 patents. His work has focused on improving the quality and properties of silver halide photographic materials.

Latest Patents

Among his latest patents is a process for forming a yellow color image using silver halide photographic materials. This invention involves contacting exposed silver halide grain with a developer in the presence of a specific yellow coupler. Additionally, he has developed a light-sensitive silver halide photographic material that boasts improved anti-fogging properties.

Career Highlights

Shigemasa Itoh is associated with Konishiroku Photo Industry Co., Ltd., a company renowned for its advancements in photographic technology. His innovative work has played a crucial role in enhancing the performance of photographic materials.

Collaborations

Throughout his career, Shigemasa has collaborated with notable colleagues, including Teiji Habu and Tsuneo Wada. These partnerships have contributed to the development of cutting-edge photographic technologies.

Conclusion

Shigemasa Itoh's contributions to the field of photographic materials have established him as a key figure in innovation. His patents reflect a commitment to advancing photographic technology and improving image quality.

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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