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For the Inventor, By the Inventor

Ichikawa, Japan

Masaki Uchiyama

This inventor holds 33 USPTO granted patents, primarily in Electrostatic Imaging. Top assignee: Canon Kabushiki Kaisha. Active years: 1981-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaki Uchiyama. Retrieved from https://idiyas.com/inventor/masaki-uchiyama

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

USPTO Granted Patents = 33

% Patents Active = 100.0

Average Co-Inventor Count = 4.1

ph-index = 13

Forward Citations = 431(Granted Patents)


Location History:

  • Kawasaki, JP (1981 - 1982)
  • Nakamachi, JP (1985 - 1986)
  • Tokyo, JP (1984 - 1987)
  • Ichikawa, JP (1988 - 1996)
  • Yokohama, JP (1995 - 1999)

Company Filing History:

goldMedal33 out of 92,994 
 
Canon Kabushiki Kaisha
 patents

Years Active: 1981-1999

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Areas of Expertise:
Electrostatic Image
Toner Production
Magnetic Toner
Image Forming Method
Positively Chargeable Toner
Developer Composition
Silica Particles
Non-Magnetic Toner
Particulate Developer
Crosslinked Polymers
Development Process
Toner Application Method
33 patents (USPTO):Explore Patents
1. 5863697 - Toner for developing electrostatic image and process for production (1999-01-26),
2. 5863695 - Toner for developing electrostatic image and image forming method (1999-01-26),
3. 5849453 - Image forming method including recycling of untransferred toner (1998-12-15),
4. 5795694 - Toner for developing electrostatic image (1998-08-18),
5. 5641600 - Magnetic toner and image forming method (1997-06-24),
6. 5629122 - Toner for developing electrostatic image and image forming method (1997-05-13),
7. 5504272 - Magnetic toner having defined particle distribution (1996-04-02),
8. 5500318 - Toner for developing electrostatic image and fixing method (1996-03-19),
9. 5480755 - Magnetic toner, image forming method, surface-modified fine silica (1996-01-02),
10. 5415967 - Process for producing toner (1995-05-16),
11. 5348829 - Monocomponent-type developer for developing electrostatic image and (1994-09-20),
12. 5338894 - Image forming method with improved development (1994-08-16),
13. 5330871 - Toner for developing electrostatic image (1994-07-19),
14. 5296326 - Magnetic toner (1994-03-22),
15. 5268248 - Toner for developing electrostatic image and process for production (1993-12-07),

Title: Masaki Uchiyama: Innovator in Electrophotography

Introduction

Masaki Uchiyama, based in Ichikawa, Japan, is a prolific inventor with an impressive portfolio of 33 patents. His work primarily focuses on advancements in electrophotography, particularly in the development of toners used for creating electrostatic images.

Latest Patents

Among Uchiyama's latest inventions are two significant patents related to toners for developing electrostatic images. The first patent describes a toner composed of multifunctional toner particles that include a core made from a low-temperature softening substance, along with an inner layer and an outer layer designed for improved performance. The unique composition allows for differentiation through specific staining methods. The second patent outlines a toner formulation that incorporates a binder resin and a wax, where the wax is characterized by a weight average molecular weight to number average molecular weight ratio of no more than 1.5. This innovation offers enhanced properties for image development.

Career Highlights

Masaki Uchiyama currently works at Canon Kabushiki Kaisha, a renowned leader in imaging and optical products. His contributions to the field have significantly influenced the quality and efficiency of electrophotographic processes. Through his patents, Uchiyama has made advancements that are pivotal for modern imaging technologies.

Collaborations

Collaboration is vital in the field of innovation, and Uchiyama works alongside talented colleagues such as Yasutaka Akashi and Hirohide Tanikawa. Together, they contribute to the development of cutting-edge technologies that advance Canon's capabilities in the imaging industry.

Conclusion

Masaki Uchiyama's inventive spirit and dedication to enhancing electrophotography through his patents highlight his importance in the field. His work not only reflects his expertise but also the collaborative energy at Canon, where innovation continues to drive progress in imaging technologies.

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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