Hino, Japan

Koichi Nagayasu

This inventor holds 18 USPTO granted patents, primarily in Photographic Materials. Top assignees: Konica Corporation, Konishiroku Photo Industry Co., Ltd.. Active years: 1976-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koichi Nagayasu. Retrieved from https://idiyas.com/inventor/koichi-nagayasu

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 = 3.2

ph-index = 10

Forward Citations = 267(Granted Patents)


Location History:

  • Hino, JA (1976)
  • Tokyo, JP (1994)
  • Hino, JP (1981 - 2006)

Company Filing History:


Years Active: 1976-2006

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Areas of Expertise:
Cellulose Ester Film
Polarizing Plate
Light-Sensitive Materials
Photographic Films
Silver Halide
Protective Film
Antistatic Treatment
Production Method
Information Recording Medium
Electrophotographic Plate
18 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Koichi Nagayasu

Introduction: Koichi Nagayasu, a skilled inventor based in Hino, Japan, has made significant contributions to the field of technology through his extensive work in developing innovative materials. With a noteworthy portfolio of 18 patents, Nagayasu's inventions primarily focus on cellulose ester films and their applications in liquid crystal displays.

Latest Patents: Among his latest patents are groundbreaking inventions such as a cellulose ester film, production method of the same, and a film employed in liquid crystal display members, which includes a polarizing plate. This film boasts a thickness ranging from 20 to 60 micrometers, with a variation in thickness within ±3.0 percent of the standard film thickness, showcasing the precision and quality of Nagayasu's work.

Career Highlights: Over the years, Nagayasu has worked with prominent companies such as Konica Corporation and Konishiroku Photo Industry Co., Ltd. His dedication to advancing technology in the realms of photography and display technologies has solidified his position as an influential figure within the industry.

Collaborations: Throughout his career, Nagayasu has collaborated with talented individuals like Isamu Michihata and Toru Kobayashi. These partnerships have further enriched his innovative pursuits and contributed to the successful development of his patented technologies.

Conclusion: Koichi Nagayasu's work exemplifies the spirit of innovation and the pursuit of excellence in technology. His patents, particularly in the realm of cellulose ester films for liquid crystal displays, reflect a deep understanding of materials science and an unwavering commitment to enhancing display technologies. As he continues to work in this dynamic field, his inventions will likely inspire future advancements.

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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