Tokyo, Japan

Yoshiteru Sakatsume

This inventor holds 2 USPTO granted patents and 2 published patent applications and 2 EPO patents. Top assignees: Shin-Etsu Chemical Co., Ltd., Morimura Chemicals Limited. Active years: 2001-2016.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshiteru Sakatsume. Retrieved from https://idiyas.com/inventor/yoshiteru-sakatsume

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

USPTO Granted Patents = 2 

% Patents Active = 100.0

 

Average Co-Inventor Count = 6.2

ph-index = 2

Forward Citations = 21(Granted Patents)


Location History:

  • Sakura, JP (2001)
  • Tokyo, JP (2016)

Company Filing History:


Years Active: 2001-2016

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2 patents (USPTO):Explore Patents

Title: Inventor Yoshiteru Sakatsume: Pioneering Innovations in Electrostatic Toners

Introduction

Yoshiteru Sakatsume, an accomplished inventor based in Tokyo, Japan, has made significant contributions to the field of electrostatic imaging technology. With a total of two patents to his name, he has focused on creating advanced charge control agent compositions and additives that enhance the performance of electrostatic image developing toners. His innovations are pivotal for maintaining image quality and efficiency in various applications.

Latest Patents

Sakatsume's latest patents include two notable inventions aimed at improving toner performance. The first patent focuses on a **charge control agent composition for external addition**, specifically designed to maintain the stability of tribocharge between toner particles and magnetic carriers. By utilizing a mixture of carrier particles of varying sizes along with a charge control agent, this composition reduces image degradation during prolonged use.

The second patent relates to an **external additive for electrostatically charged latent image developing toner**. This innovative additive consists of spherical hydrophobic fine silica particles that demonstrate excellent dispersibility in organic compounds and do not interact negatively with organic photoreceptors. It enhances flowability, ensuring that toner adheres properly without causing any quality degradation.

Career Highlights

Yoshiteru Sakatsume has honed his expertise through distinguished employment at reputable companies, including Shin-Etsu Chemical Co., Ltd. and Morimura Chemicals Limited. His work at these organizations has facilitated his research and development efforts, allowing him to push the boundaries of toner technology and establish himself as a key player in the field.

Collaborations

Throughout his career, Sakatsume has worked alongside prominent professionals, including Muneo Kudo and Masaki Tanaka. These collaborations have not only enriched his knowledge but also fostered a team-oriented environment conducive to innovative breakthroughs.

Conclusion

Yoshiteru Sakatsume stands out as a leading inventor in the area of electrostatic imaging technology. His commitment to innovation, as evidenced by his noteworthy patents, has greatly contributed to advancements in developing toners and charge control agents. His work continues to leave a lasting impact on the industry, ensuring that electrostatic imaging remains a reliable and effective technology.

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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