Katsuru Matsumoto

This inventor holds 25 USPTO granted patents, primarily in Toner Manufacturing. Top assignee: Sharp Kabushiki Kaisha Corporation. Active years: 2006-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsuru Matsumoto. Retrieved from https://idiyas.com/inventor/katsuru-matsumoto

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

USPTO Granted Patents = 25

% Patents Active = 4.0

Average Co-Inventor Count = 2.8

ph-index = 3

Forward Citations = 28(Granted Patents)

Location History:

Nara, JP (2006 - 2012)
Osaka, JP (2012 - 2014)

Company Filing History:

25 out of 25,954

Sharp Kabushiki Kaisha Corporation

patents

Years Active: 2006-2014

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Areas of Expertise:

Toner

Manufacturing Method

Two-Component Developer

Developing Device

Image Forming Apparatus

Resin Particles

Aggregate Particles

Functional Particle

Electrophotography

Capsulated Toner

Release Agent

Aggregate Dispersant

25 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8877416 - Toner and method for manufacturing the same (2014-11-04),

2. 8580473 - Toner and method for manufacturing the same (2013-11-12),

3. 8273515 - Toner and method of manufacturing the same, two-component developer, developing device and image forming apparatus (2012-09-25),

4. 8252501 - Method of manufacturing coalesced resin particles, coalesced resin particles, toner, two-component developer, developing device, and image forming apparatus (2012-08-28),

5. 8187783 - Method of manufacturing toner, toner, two-component developer, developing device and image forming apparatus (2012-05-29),

6. 8163458 - Method of manufacturing toner, toner, two-component developer, developing device, and image forming apparatus (2012-04-24),

7. 8097395 - Method of manufacturing toner particles, toner particles, two-component developer, developing device and image forming apparatus (2012-01-17),

8. 8092968 - Toner, method of manufacturing toner, developer, two-component developer, developing device, and image forming apparatus (2012-01-10),

9. 8067143 - Functional particle and manufacturing method thereof (2011-11-29),

10. 8021817 - Aggregate dispersant, method of manufacturing aggregate of resin-containing particles, toner, developer, developing apparatus, and image forming apparatus (2011-09-20),

11. 7910279 - Method of manufacturing aggregate particles and toner (2011-03-22),

12. 7887986 - Method of manufacturing toner particles, toner particles, two-component developer, developing device and image forming apparatus (2011-02-15),

13. 7875413 - Capsulated toner having fine particle cycloolefin copolymer resin shell (2011-01-25),

14. 7833446 - Method of manufacturing aggregated particles (2010-11-16),

15. 7781139 - Toner manufacturing method (2010-08-24),

Title: **Katsuru Matsumoto: Innovating Toner Technologies in Nara, Japan**

Introduction

Katsuru Matsumoto, residing in Nara, Japan, is a prominent inventor recognized for his significant contributions to toner technology. Over his career, he has been granted a remarkable 25 patents, showcasing his dedication to innovation in this specialized field.

Latest Patents

Matsumoto's latest patents include an advanced toner and methods for its manufacturing. The toner composition features a binder resin, a colorant, and a unique benzilic acid compound. The binder resin consists of two key components: a polyester resin A, which is derived from polycondensing aromatic dicarboxylic acid, rosin, and trivalent or higher-valent alcohol, with at least 60% by weight of the rosin present in the starting materials. Additionally, a polyester resin B is included, created from aromatic dicarboxylic acid and polyhydric alcohol, showcasing tailored viscosity measures that align with the performance requirements of the toner application.

Career Highlights

Currently, Matsumoto works for Sharp Kabushiki Kaisha Corporation, a leading company in electronics and technology innovations. His role allows him to work at the forefront of toner development and contribute to various advancements that utilize his patented technologies. His extensive experience in the field underlines his status as a reliable innovator.

Collaborations

Throughout his career, Matsumoto has collaborated with several talented individuals, including his coworkers Yasuhiro Shibai and Keiichi Kikawa. These partnerships foster a creative environment that encourages the pursuit of groundbreaking ideas in toner technology and other related areas.

Conclusion

Katsuru Matsumoto's impressive portfolio of patents and contributions to the toner industry exemplify his commitment to innovation. His work at Sharp Kabushiki Kaisha Corporation and collaborations with key colleagues illustrate the importance of teamwork in advancing technology. As he continues to innovate, the impact of his inventions will likely resonate through the industry for years to come.

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]