Yokohama, Japan

Koji Ishikawa

This inventor holds 3 USPTO granted patents and 1 published patent application. Top assignee: Mitsui Toatsu Chemicals, Incorporated. Active years: 1979-1984.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koji Ishikawa. Retrieved from https://idiyas.com/inventor/koji-ishikawa-smr8mf8y

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

Calculating rank
USPTO Granted Patents = 3 

% Patents Active = 100.0

Average Co-Inventor Count = 4.6

ph-index = 3

Forward Citations = 35(Granted Patents)


Location History:

  • Yokohama, JP (1979)
  • Chiba, JP (1984)

Company Filing History:


Years Active: 1979-1984

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3 patents (USPTO):Explore Patents

Title: Koji Ishikawa: Innovator in Electrophotographic Technology

Introduction

Koji Ishikawa is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of electrophotographic technology, holding a total of 3 patents. His work focuses on developing innovative materials and processes that enhance the performance of electrophotographic toners.

Latest Patents

Ishikawa's latest patents include an electrophotographic toner comprising cinnamic acid. This toner features a constituent resin with a softening point ranging from room temperature to 170°C. The resin includes a copolymer of cinnamic acid and one or more vinyl monomers, along with various mixtures that optimize its performance. Another significant patent is a process for forming metallic finish coatings, which provides a unique approach to achieving high-quality metallic finishes in coatings.

Career Highlights

Koji Ishikawa has built a successful career at Mitsui Toatsu Chemicals, Incorporated. His innovative work has positioned him as a key figure in the development of advanced electrophotographic materials. His patents reflect his commitment to enhancing the efficiency and quality of toner products.

Collaborations

Ishikawa has collaborated with notable colleagues, including Nobuki Kobayashi and Hiroshi Ozawa. These partnerships have contributed to the advancement of technology in their field.

Conclusion

Koji Ishikawa's contributions to electrophotographic technology through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the industry positively, showcasing the importance of innovation in material science.

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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