logo

For the Inventor, By the Inventor

Kanagawa, Japan

Yasuo Kadokura

This inventor holds 72 USPTO granted patents and 28 published patent applications and 9 EPO patents, primarily in Electrostatic Imaging (CPC class G03G). Top assignees: Fuji Xerox Co., Ltd., Fujifilm Business Innovation Corp.. Active years: 1998-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasuo Kadokura. Retrieved from https://idiyas.com/inventor/yasuo-kadokura

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

USPTO Granted Patents = 72 

% Patents Active = 91.7

 

Average Co-Inventor Count = 5.6

ph-index = 6

Forward Citations = 142(Granted Patents)

Forward Citations (Not Self Cited) = 128(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Odawara, JP (1999)
  • Minami-ashigara, JP (1998 - 2024)
  • Kanagawa, JP (2008 - 2024)

Company Filing History:

goldMedal60 out of 11,665 
 
Fuji Xerox Co., Ltd.
 patents
silverMedal12 out of 2,407 
 
Fujifilm Business Innovation Corp.
 patents

Years Active: 1998-2026

Loading Chart...
Loading Chart...
Areas of Expertise:
Electrostatic Charge
Image Developer
Toner Cartridge
Process Cartridge
Image Forming Apparatus
Photocatalyst
Silica Particle
Resin Particle
Composite Aerogel
Magnetic Developer
Toner Set
72 patents (USPTO):Explore Patents
1. 12663735 - Electrostatic charge image developer, developer cartridge, process cartridge, image forming apparatus, and image forming method (2026-06-23),
2. 12461467 - Carrier for electrostatic image development, electrostatic image developer, process cartridge, image forming apparatus, and image forming method (2025-11-04),
3. 12181836 - Electrostatic charge image developing carrier, electrostatic charge image developer, process cartridge, image forming apparatus and image forming method (2024-12-31),
4. 12174583 - Electrostatic charge image developing carrier, electrostatic charge image developer, process cartridge, image forming apparatus and image forming method (2024-12-24),
5. 12169390 - Electrostatic charge image developer, process cartridge, image forming apparatus, and image forming method (2024-12-17),
6. 12153377 - Electrostatic charge image developer, process cartridge, image forming apparatus, and image forming method (2024-11-26),
7. 11982975 - Electrostatic charge image developing carrier, electrostatic charge image developer, process cartridge, image forming apparatus and image forming method (2024-05-14),
8. 11960243 - Electrostatic image developer, process cartridge, image forming apparatus, and image forming method (2024-04-16),
9. 11747744 - Electrostatic charge image developing carrier, electrostatic charge image developer, and image forming apparatus (2023-09-05),
10. 11561483 - Electrostatic charge image developing carrier, electrostatic charge image developer, and image forming apparatus (2023-01-24),
11. 11556071 - Electrostatic charge image developing carrier, electrostatic charge image developer, process cartridge, image forming apparatus and image forming method (2023-01-17),
12. 11181847 - Carrier for electrostatic image development, electrostatic image developer, and process cartridge (2021-11-23),
13. 10908523 - Toner and toner set (2021-02-02),
14. 10807070 - Silica titania composite aerogel particle, photocatalyst forming composition, and photocatalyst (2020-10-20),
15. 10807058 - Silica-titania composite aerogel particle, photocatalyst-forming composition, and photocatalyst (2020-10-20),

Title: Innovations of Yasuo Kadokura in Electrostatic Charge Development

Introduction

Yasuo Kadokura, an esteemed inventor based in Kanagawa, Japan, has made significant contributions to the field of electrostatic charge image development. With an impressive portfolio of 70 patents, Kadokura's work has had a profound impact on the imaging technology industry.

Latest Patents

Among his latest innovations are several patents related to electrostatic charge image development. Notable patents include the electrostatic charge image developing carrier, electrostatic charge image developer, process cartridge, image forming apparatus, and image forming method. The electrostatic charge image developing carrier features a magnetic particle and is coated with a resin layer that contains inorganic particles. The area ratio of these inorganic particles is meticulously designed to be between 10% and 50%. Another recent patent includes an electrostatic charge image developing carrier containing a silica particle, with an X-ray photoelectron spectroscopy (XPS) measurement revealing that the ratio of silicon on the coating resin layer surface is maintained between 6 atom % and 12 atom %.

Career Highlights

Kadokura has had a distinguished career, having worked at prominent companies such as Fuji Xerox Co., Ltd. and Fujifilm Business Innovation Corporation. His expertise and innovation in image processing have positioned him as a leading figure in the advancement of imaging technologies.

Collaborations

Throughout his career, Kadokura has collaborated with talented professionals, including notable coworkers Hiroyoshi Okuno and Yuka Zenitani. These collaborations have fostered a creative and innovative environment that has driven numerous advancements in imaging technology.

Conclusion

Yasuo Kadokura's extensive body of work and his commitment to innovation have made him a vital contributor to the field of electrostatic charge image development. His contributions are not just significant for Fuji Xerox and Fujifilm, but also for the wider field of imaging, setting a standard for future inventions.

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]
Loading…