Osaka, Japan

Shun-ichiro Yamanaka

This inventor holds 17 USPTO granted patents, primarily in Electrostatic Imaging. Top assignees: Orient Chemical Industries, Ltd., Other. Active years: 1995-2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shun-ichiro Yamanaka. Retrieved from https://idiyas.com/inventor/shun-ichiro-yamanaka

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


% Patents Active = 88.2

Average Co-Inventor Count = 3.0

ph-index = 7

Forward Citations = 125(Granted Patents)


Location History:

  • Hirakata, JP (1995 - 1999)
  • Osaka, JP (1996 - 2004)

Company Filing History:


Years Active: 1995-2004

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Areas of Expertise:
Charge Control Agent
Toner Development
Electrostatic Images
Monoazo Metal Compound
Aromatic Hydroxycarboxylic Acid
Calix Arene
Negative Charge Control
Chargeable Resin Powder
17 patents (USPTO):Explore Patents

Title: Shun-ichiro Yamanaka: A Pioneer in Charge Control Technology

Introduction

Shun-ichiro Yamanaka is a prominent inventor based in Osaka, Japan, known for his innovative contributions to the field of electrostatic image development. Holding a total of 17 patents, Yamanaka has made significant strides in enhancing the efficiency and functionality of charge control agents and toners used in various applications.

Latest Patents

Among Yamanaka's notable recent patents is the "Charge control agent and toner for developing electrostatic images." This invention encompasses a charge control agent characterized by its active ingredient, a metal compound that results from the reaction between molecules possessing a phenolic hydroxy group and metal alkoxides. Another significant patent is the "Process for preparing a monoazo metal complex salt compound for charge control agent and toner for developing electrostatic images," further demonstrating his expertise in the development of advanced materials for electrostatic imaging.

Career Highlights

Yamanaka's professional journey includes valuable experience at reputable organizations, particularly at Orient Chemical Industries, Ltd., where he honed his skills and contributed to groundbreaking developments in his field. His inventive work focuses not only on the chemistry of charge control agents but also on improving the overall quality of electrostatic image development.

Collaborations

Throughout his career, Yamanaka has collaborated with esteemed peers, including Kazuaki Sukata and Shuji Sugawara. These collaborations have fostered an environment of innovation and creativity, leading to the development of advanced technologies that continue to influence the industry.

Conclusion

Shun-ichiro Yamanaka stands as a notable figure in the realm of innovations related to electrostatic imaging. With his extensive patent portfolio and collaborative efforts, he contributes significantly to the ongoing advancements in this specialized area of technology. His work exemplifies the vital role of inventors in shaping the future of industrial applications.

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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