Tokyo, Japan

Joji Tajima

This inventor holds 6 USPTO granted patents. Top assignee: Nec Corporation. Active years: 1989-1996.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Joji Tajima. Retrieved from https://idiyas.com/inventor/joji-tajima

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 = 1.3

ph-index = 4

Forward Citations = 46(Granted Patents)


Company Filing History:


Years Active: 1989-1996

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6 patents (USPTO):Explore Patents

Title: Joji Tajima: Innovator in Color Image Processing

Introduction

Joji Tajima is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of color image processing, holding a total of 6 patents. His work focuses on enhancing image quality and providing innovative solutions for color reproduction.

Latest Patents

Tajima's latest patents include a color image processing apparatus capable of suppressing moire. This invention involves an image data generating circuit that produces multivalued image data for each color based on the density of magenta, cyan, and yellow. The apparatus utilizes multiple threshold value generating circuits to output comparison results in binary form, effectively preventing coarse moire. Another notable patent is a method and apparatus for coloring or recoloring visual images. This technology allows for the creation of natural-looking color images by transforming pixel sub-regions into intermediate color density data, enabling the application of desired colors under various lighting conditions.

Career Highlights

Joji Tajima is associated with NEC Corporation, where he has been instrumental in developing advanced imaging technologies. His expertise in color processing has positioned him as a key figure in the industry, contributing to the evolution of image processing techniques.

Collaborations

Throughout his career, Tajima has collaborated with notable colleagues, including Mitsuo Kaji and Akira Ito. These partnerships have fostered innovation and have led to the development of groundbreaking technologies in the field of image processing.

Conclusion

Joji Tajima's contributions to color image processing have significantly impacted the industry. His innovative patents and collaborations reflect his dedication to advancing technology in this field.

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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