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For the Inventor, By the Inventor

Kanagawa, Japan

Katsumi Masuda

This inventor holds 15 USPTO granted patents and 3 EPO patents. Top assignee: Ricoh Company, Ltd.. Active years: 1993-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsumi Masuda. Retrieved from https://idiyas.com/inventor/katsumi-masuda

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

USPTO Granted Patents = 15

% Patents Active = 46.7


Average Co-Inventor Count = 6.4

ph-index = 9

Forward Citations = 249(Granted Patents)


Location History:

  • Tokyo-to, JP (1999)
  • Edogawa-ku, JP (2007)
  • Tokyo, JP (1993 - 2008)
  • Yokohama, JP (2009 - 2012)
  • Kanagawa, JP (2010 - 2014)

Company Filing History:

goldMedal15 out of 28,934 
 
Ricoh Company, Ltd.
 patents

Years Active: 1993-2014

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15 patents (USPTO):Explore Patents
1. 8824932 - Development device, and process cartridge and image forming apparatus incorporating same (2014-09-02),
2. 8682230 - Development device, process cartridge, and image forming apparatus including same having multiple recesses formed on a developer bearer (2014-03-25),
3. 8331834 - Developing unit, image forming apparatus incorporating same, and process cartridge including same (2012-12-11),
4. 8326189 - Developing device, process cartridge, and image forming apparatus (2012-12-04),
5. 8135315 - Developer regulating member in a developing unit, process cartridge including same, and image forming apparatus incorporating same (2012-03-13),
6. 7813680 - Developing device, and image forming apparatus and process cartridge comprising the same (2010-10-12),
7. 7599650 - Developer bearing member, developing device, process cartridge and image forming apparatus (2009-10-06),
8. 7457570 - Image forming apparatus including a magnetic brush developing system using a two-component developer comprising toner and carrier (2008-11-25),
9. 7272342 - Image forming apparatus having a detachable cartridge including a photoconductive drum with axis shaft having a minimal rotational eccentricity, and a method of assembling the image forming apparatus (2007-09-18),
10. 7228093 - Method and apparatus for image forming capable of performing a stable image development (2007-06-05),
11. 7212773 - Image forming apparatus (2007-05-01),
12. 7043182 - Developer regulating member, developing device, electrophotographic image forming process cartridge, and image forming apparatus including the developer regulating member (2006-05-09),
13. 5946529 - Image forming apparatus using a roller type charging system (1999-08-31),
14. 5878317 - Electrophotographic method and apparatus including a toner recycle (1999-03-02),
15. D334771 - Toner cartridge (1993-04-13),

Title: Katsumi Masuda: Innovator in Development Devices

Introduction

Katsumi Masuda is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of development devices, holding a total of 15 patents. His work has been instrumental in advancing technology related to image forming apparatuses.

Latest Patents

Masuda's latest patents include innovative designs for development devices and process cartridges. One notable patent describes a development device that features a developer container and a developer carrier. This device incorporates a magnetic field generator with multiple magnetic poles, which facilitates the conveyance of the developer. The design ensures a predetermined gap between the developer carrier and the casing, optimizing the development process. Another patent focuses on a development device that includes a developer bearer with multiple oval recesses. These recesses are strategically arranged to enhance the efficiency of developer conveyance.

Career Highlights

Katsumi Masuda is currently employed at Ricoh Company, Ltd., where he continues to innovate in the field of imaging technology. His work has not only contributed to the company's success but has also set new standards in the industry.

Collaborations

Masuda has collaborated with notable coworkers, including Hideki Kimura and Kiyotaka Sakai. Their combined expertise has led to the development of cutting-edge technologies in the imaging sector.

Conclusion

Katsumi Masuda's contributions to the field of development devices highlight his role as a key innovator. His patents reflect a commitment to advancing technology and improving image forming processes.

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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