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For the Inventor, By the Inventor

Kawasaki, Japan

Kazumi Sekine

This inventor holds 33 USPTO granted patents, primarily in Image Forming Systems. Top assignee: Canon Kabushiki Kaisha. Active years: 1983-2005.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazumi Sekine. Retrieved from https://idiyas.com/inventor/kazumi-sekine

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 = 93.9

Average Co-Inventor Count = 2.9

ph-index = 21

Forward Citations = 1,156(Granted Patents)


Location History:

  • Kawasaki, JP (1983 - 1999)
  • Shizuoka-ken, JP (1998 - 2005)

Company Filing History:

goldMedal33 out of 92,994 
 
Canon Kabushiki Kaisha
 patents

Years Active: 1983-2005

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Areas of Expertise:
Image Forming Apparatus
Process Cartridge
Photosensitive Drum
Sealing Member
Developer Container
Charging Device
Recording Apparatus
Electronic Instrument
Hand Recording Apparatus
Blade Member
Waste Developer Container
Developing Agent Supply Container
33 patents (USPTO):Explore Patents
1. 6856775 - REMANUFACTURING METHOD FOR A PROCESS CARTRIDGE AND PROCESS CARTRIDGE HAVING A DRUM, A DRUM FRAME, A DEVELOPING FRAME, A DEVELOPER FRAME, SIDE COVERS, AN IMAGE TRANSFER OPENING, AND A DRUM SUPPORTING SHAFT (2005-02-15),
2. 6788908 - Process cartridge remanufacturing method, disassembling method and assembling method, positioning and connecting apparatus and process cartridge (2004-09-07),
3. 6009289 - Process cartridge, developer container, waste developer container, (1999-12-28),
4. 5926672 - Photosensitive drum provided in an image forming apparatus including (1999-07-20),
5. 5828929 - Image forming system and process cartridge having particular arrangement (1998-10-27),
6. 5828928 - Process cartridge mountable in an image forming system and a method for (1998-10-27),
7. 5809374 - Process cartridge including a seal member formed from a liquid-foam (1998-09-15),
8. 5768660 - Charging device and process cartridge (1998-06-16),
9. 5708925 - Developing agent supply container, process cartridge, and (1998-01-13),
10. 5697021 - Sealing member featuring a compressable seal portion, and process (1997-12-09),
11. 5669042 - Image forming system having means to support at least one component of a (1997-09-16),
12. 5659847 - Process cartridge having positioning member for positioning optical (1997-08-19),
13. 5650820 - Hand recording apparatus and movement guide therefor (1997-07-22),
14. 5623328 - Process cartridge and image forming system on which process cartridge is (1997-04-22),
15. 5608509 - Process cartridge with blade member having a flat-surface side and an (1997-03-04),

Title: Kazumi Sekine: Innovator in Process Cartridge Remanufacturing

Introduction

Kazumi Sekine is a distinguished inventor based in Kawasaki, Japan, recognized for his significant contributions to the field of imaging technology. With an impressive portfolio of 33 patents to his name, his innovative methods have revolutionized the remanufacturing of process cartridges used in electrophotographic image forming apparatus.

Latest Patents

Among Sekine's latest inventions is a comprehensive remanufacturing method for a process cartridge. This method includes several critical steps: forming a hole in the second side cover for the drum supporting shaft, removing the drum supporting shaft from the drum frame, and the precise handling of electrophotographic photosensitive drums throughout the process. The method also advocates a systematic approach for insertion and mounting, culminating in a refilling step for the developer frame. Another notable patent involves a disassembling method for a process cartridge that ensures optimal maintenance and functionality, detailing the cutting of cover members to facilitate easy assembly and disassembly.

Career Highlights

Kazumi Sekine is affiliated with Canon Kabushiki Kaisha, a global leader in imaging and printing technology. His extensive work at Canon has been central to advancing the environmental sustainability of imaging solutions through innovative remanufacturing techniques. Sekine's genius lies not only in his technical prowess but also in his ability to address pressing industry needs, notably in waste reduction and resource reuse.

Collaborations

Throughout his career, Sekine has collaborated with esteemed colleagues, including Isao Ikemoto and Kazushi Watanabe. Together, they have pushed the boundaries of technology to enhance product performance and sustainability within the imaging domain. These collaborations have yielded significant developments, enabling Canon to maintain its competitive edge in a rapidly evolving marketplace.

Conclusion

Kazumi Sekine stands as a notable figure in the realm of innovation within the imaging technology sector. His 33 patents reflect not only his commitment to excellence but also his foresight in addressing the environmental challenges of the industry. Through his work at Canon Kabushiki Kaisha and his collaborative efforts, Sekine continues to reshape the standards of process cartridge remanufacturing with cutting-edge solutions.

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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