Numazu, Japan

Katsuhisa Yamazaki

This inventor holds 51 USPTO granted patents and 9 published patent applications and 14 EPO patents, primarily in Toner Technology (CPC class G03G). Top assignee: Canon Kabushiki Kaisha. Active years: 2002-2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsuhisa Yamazaki. Retrieved from https://idiyas.com/inventor/katsuhisa-yamazaki

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

USPTO Granted Patents = 51 

% Patents Active = 84.3

 

Average Co-Inventor Count = 5.5

ph-index = 28

Forward Citations = 1,325(Granted Patents)

Forward Citations (Not Self Cited) = 960(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Shizuoka, JP (2003 - 2007)
  • Numazu, JP (2002 - 2021)

Company Filing History:


Years Active: 2002-2021

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Areas of Expertise:
Toner
Magnetic Toner
External Additive
Image-Forming Method
Electrophotography
Developer
Hybrid Binder Resin
Positively Chargeable Developer
Manufacturing Process
Image Quality
Silica Powder
Intrinsic Viscosity
51 patents (USPTO):Explore Patents

Title: **Katsuhisa Yamazaki: A Pioneer in Toner Innovations**

Introduction

Katsuhisa Yamazaki, based in Numazu, Japan, is a prolific inventor known for his significant contributions in the field of toner technology. With an impressive portfolio of 51 patents, he has played a crucial role in advancing the performance and efficiency of toner products.

Latest Patents

Yamazaki's recent patents showcase his innovative approach to toner formulation. One notable patent describes a toner that incorporates a toner particle containing a binder resin. This binder resin possesses crystalline properties, impacting viscoelasticity. The patent outlines specific criteria for storage modulus measurements, ensuring optimal performance in various conditions. Another significant patent involves a toner that includes a polyester resin composition. This invention specifies the use of particular aliphatic hydrocarbons alongside polyester resins derived from alkyl monoalcohol and monocarboxylic acids, highlighting a precise balance in composition for enhanced thermal properties.

Career Highlights

Yamazaki is a key member of Canon Kabushiki Kaisha, where he applies his expertise in material science and engineering. His dedication to research and development has positioned him as an influential figure in his industry, contributing to Canon's reputation as a leader in imaging and printing technology.

Collaborations

Throughout his career, Katsuhisa Yamazaki has collaborated with notable colleagues, including Daisuke Yoshiba and Masami Fujimoto. These partnerships highlight a team-oriented approach to innovation, fostering an environment where complex problems can be addressed through collaborative effort.

Conclusion

Katsuhisa Yamazaki's work exemplifies the spirit of innovation in the toner industry. His patents not only push the boundaries of toner technology but also contribute to the broader advancements in material science. As he continues to develop new solutions, his legacy as a leading inventor in this field will undoubtedly grow.

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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