Shizuoka, Japan

Idzumi Okajima

This inventor holds 4 USPTO granted patents and 4 published patent applications and 1 EPO patent. Top assignees: Ricoh Company, Ltd., Shizuoka University, J-Oil Mills, Inc.. Active years: 2012-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Idzumi Okajima. Retrieved from https://idiyas.com/inventor/idzumi-okajima

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

USPTO Granted Patents = 4 

% Patents Active = 25.0

 

Average Co-Inventor Count = 6.2

ph-index = 1

Forward Citations = 1(Granted Patents)


Location History:

  • Hamamatsu, JP (2012)
  • Shizuoka, JP (2014 - 2015)

Company Filing History:


Years Active: 2012-2015

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4 patents (USPTO):Explore Patents

Title: Idzumi Okajima: Innovator in Electrophotography

Introduction

Idzumi Okajima is a notable inventor based in Shizuoka, Japan. He has made significant contributions to the field of electrophotography, holding a total of 4 patents. His innovative methods have advanced the technology used in this area, showcasing his expertise and dedication to research and development.

Latest Patents

Okajima's latest patents include a method for regenerating carrier core material for electrophotography and a method for manufacturing carriers for electrophotography. One of his key inventions involves treating a carrier for electrophotography with an aqueous solution containing an oxidant in a subcritical or supercritical state. This method operates at a temperature of 280°C or greater and a density of 0.20 g/cm³ or greater, ensuring effective regeneration of the carrier core material. Additionally, he has developed a method for producing polymer particles, which involves polymerizing and granulating monomers in a compressive fluid with a catalyst.

Career Highlights

Throughout his career, Okajima has worked with prominent organizations such as Ricoh Company, Ltd. and Shizuoka University. His experience in these institutions has allowed him to refine his skills and contribute to groundbreaking advancements in electrophotography.

Collaborations

Some of his notable coworkers include Takeshi Sako and Chiaki Tanaka. Their collaborative efforts have further enhanced the research and development in the field.

Conclusion

Idzumi Okajima's contributions to electrophotography through his innovative patents and collaborations highlight his role as a leading inventor in this specialized field. His work continues to influence advancements in technology and research.

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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