Tokyo, Japan

Shigeki Ohkawa

This inventor holds 1 USPTO granted patent. Top assignee: Copyer Co., Ltd.. Active years: 1982.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shigeki Ohkawa. Retrieved from https://idiyas.com/inventor/shigeki-ohkawa

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 = 3.0

ph-index = 1

Forward Citations = 48(Granted Patents)


Company Filing History:


Years Active: 1982

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1 patent (USPTO):Explore Patents

Title: Shigeki Ohkawa: Innovator in Electrophotographic Materials

Introduction

Shigeki Ohkawa is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of electrophotographic materials. His innovative work has led to the development of unique chemical compounds that have practical applications in various technologies.

Latest Patents

Shigeki Ohkawa holds a patent for "Styryl pyrazoline compounds, process for production thereof." This patent includes a compound of the formula where R₁ and R₂ can represent an alkyl group or combine with the nitrogen atom to form a ring. Additionally, X represents a pyridyl group, a quinolyl group, or a pyridyl or quinolyl group substituted by at least one alkyl or alkoxy group. The patent also details a process for preparing the compound and an electrophotographic material containing the same. He has 1 patent to his name.

Career Highlights

Shigeki Ohkawa is associated with Copyer Co., Ltd., where he continues to work on innovative projects. His expertise in chemistry and materials science has positioned him as a valuable asset in his field.

Collaborations

Some of his notable coworkers include Shozo Ishikawa and Shoji Masubuchi. Their collaborative efforts contribute to the advancement of technology in their respective areas.

Conclusion

Shigeki Ohkawa's contributions to the field of electrophotographic materials highlight his innovative spirit and dedication to advancing technology. His work continues to influence the industry and inspire future innovations.

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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