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For the Inventor, By the Inventor

Kawasaki, Japan

Yoshimichi Katagiri

This inventor holds 32 USPTO granted patents, primarily in Electrophotographic Toners. Top assignees: Fuji Xerox Co., Ltd., Fujitsu Corporation, Harima Chemicals, Incorporated. Active years: 1987-2008.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshimichi Katagiri. Retrieved from https://idiyas.com/inventor/yoshimichi-katagiri

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

USPTO Granted Patents = 32

% Patents Active = 75.0

Average Co-Inventor Count = 4.5

ph-index = 8

Forward Citations = 281(Granted Patents)


Location History:

  • Chigasaki, JP (1987 - 1996)
  • Kanagawa, JP (2002 - 2006)
  • Kawasaki, JP (1995 - 2008)
  • Ebina, JP (2007 - 2008)

Company Filing History:

goldMedal15 out of 11,665 
 
Fuji Xerox Co., Ltd.
 patents
silverMedal13 out of 39,371 
 
Fujitsu Corporation
 patents
bronzeMedal1 out of 83 
 
Harima Chemicals, Incorporated
 patents
4. 1 out of 28 
 
Nippon Carbide Industries Co., Inc.
 patents
5. 1 out of 28,934 
 
Ricoh Company, Ltd.
 patents
6. 4 out of 834,453 
Other
 patents
where one patent can have more than one assignee

Years Active: 1987-2008

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Areas of Expertise:
Electrophotography
Color Toner
Image Formation
Flash Fusing
Image Fixing
Developing Device
Printing Device
Toner Binder
Nonmagnetic Development
Process Cartridge
Two Component Developer
Magnetic Brush Developer
32 patents (USPTO):Explore Patents
1. 7439003 - Magnetic black toner for electrophotography having Mn-containing hematite compound and magnetic two-component developer for electrophotography containing the same (2008-10-21),
2. 7316882 - Image forming method (2008-01-08),
3. 7316879 - Imaging color toner, color image forming method and color image forming apparatus (2008-01-08),
4. 7254363 - Image-forming process and image-forming apparatus using flash fusing (2007-08-07),
5. 7252914 - Toner for electrophotography and developer for electrophotography using the same, process cartridge, apparatus for forming image, and method for forming image (2007-08-07),
6. 7083887 - Color toner and image forming apparatus using the color toner (2006-08-01),
7. 6963711 - Developing method and developing device for electrophotographic image, and printing device using the developing device (2005-11-08),
8. 6855468 - Color image formation method (2005-02-15),
9. 6852457 - Image fixing method (2005-02-08),
10. 6833228 - Toner and an image formation method (2004-12-21),
11. 6821696 - Toner for optical fixing, manufacturing method therefor and image formation apparatus using it (2004-11-23),
12. 6746808 - Image forming color toner, color image forming method and color image forming apparatus (2004-06-08),
13. 6737210 - Image formation method, electrophotographic toners, and printed matter (2004-05-18),
14. 6727030 - Toner and an image formation method (2004-04-27),
15. 6704538 - Color image forming apparatus and color toner (2004-03-09),

Title: The Innovative Genius of Yoshimichi Katagiri

Introduction

Yoshimichi Katagiri, a prolific inventor based in Kawasaki, Japan, holds an impressive portfolio of 32 patents, showcasing his significant contributions to the field of electrophotography. His inventive spirit and academic excellence led to breakthroughs in imaging technology, especially concerning toner development and image formation processes.

Latest Patents

Katagiri's latest patented inventions include a magnetic black toner for electrophotography that incorporates a manganese-containing hematite compound. This innovative toner consists of a binding resin, a magnetic substance, and a pigment. The unique formulation ensures that the content ratios of the magnetic substance and the pigment adhere to specific parameters, ultimately enhancing the efficiency and quality of image creation. Another notable patent involves an imaging color toner designed for photofixing systems. This toner utilizes a binder resin, primarily a polyester concoction, allowing it to perform effectively in various imaging processes.

Career Highlights

Throughout his career, Yoshimichi Katagiri has made substantial contributions while working at renowned companies such as Fujitsu Corporation and Fuji Xerox Co., Ltd. His role in these organizations provided him the platform to innovate and advance technologies that are critical in the imaging industry.

Collaborations

Katagiri has collaborated with esteemed colleagues, including Yasushige Nakamura and Masakazu Kinoshita, who have collectively contributed to advancing their field. These partnerships have fostered a dynamic exchange of ideas that have been pivotal in developing advanced imaging technologies and products.

Conclusion

In conclusion, Yoshimichi Katagiri stands out as a significant figure in the realm of electrophotography, with a notable track record of inventions and patent achievements. His contributions continue to influence the imaging technology landscape, marking him as a key innovator in this competitive industry.

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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