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For the Inventor, By the Inventor

Numazu, Japan

Hironobu Isobe

This inventor holds 32 USPTO granted patents and 4 EPO patents, primarily in Electrophotographic Imaging. Top assignee: Canon Kabushiki Kaisha. Active years: 1992-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hironobu Isobe. Retrieved from https://idiyas.com/inventor/hironobu-isobe

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 = 87.5

 

Average Co-Inventor Count = 3.2

ph-index = 19

Forward Citations = 1,653(Granted Patents)


Location History:

  • Yokohama, JP (1992 - 2000)
  • Shizuoka-ken, JP (2004)
  • Numazu, JP (1999 - 2006)
  • Shizuoka, JP (2003 - 2006)

Company Filing History:

goldMedal32 out of 92,901 
 
Canon Kabushiki Kaisha
 patents

Years Active: 1992-2006

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Areas of Expertise:
Process Cartridge
Developing Cartridge
Image Forming Apparatus
Developer Supply Container
Electrophotographic
Memory Device
Control System
Developer Density
Developer Replenishing
Cylindrical Member
Sheet Feeding Apparatus
Engagement Member
32 patents (USPTO):Explore Patents
1. 7155137 - Process cartridge, developing cartridge and developing roller (2006-12-26),
2. 7110684 - Cartridge for replenishing developer including a memory device and a control system featuring the cartridge (2006-09-19),
3. 7082276 - Information storing medium, unit, process cartridge, developing cartridge, and electrophotographic image forming apparatus (2006-07-25),
4. 6983115 - Developing cartridge and process cartridge having first and second projected portions and image forming apparatus mounting such a developing cartridge (2006-01-03),
5. 6978100 - Process cartridge, developing cartridge and developing roller (2005-12-20),
6. 6839534 - Image forming apparatus and developer supply container removably mountable in image forming apparatus (2005-01-04),
7. 6826380 - Information storing medium, unit, process cartridge, developing cartridge, and electrophotographic image forming apparatus (2004-11-30),
8. 6782219 - Cartridge and electrophotographic image forming apparatus (2004-08-24),
9. 6754454 - Image forming apparatus capable of discriminating a service life of detachably mounted process unit (2004-06-22),
10. 6718144 - Image forming apparatus and process unit mountable to image forming apparatus (2004-04-06),
11. 6704521 - Image forming apparatus and image forming method (2004-03-09),
12. D477631 - Developing cartridge (2003-07-23),
13. 6564029 - Cartridge having developer supply opening and image forming apparatus usable therewith (2003-05-13),
14. 6556800 - Developer supply container and image forming apparatus capable of mounting the container thereon (2003-04-29),
15. 6463233 - Process cartridge having first and second cartridge guiding portions and an electrophotographic image forming apparatus to which the process cartridge is attached (2002-10-08),

Title: Hironobu Isobe: A Pioneer in Electrophotographic Systems

Introduction

Hironobu Isobe, based in Numazu, Japan, is a prolific inventor known for his significant contributions to the field of electrophotographic image forming technology. With an impressive portfolio of 32 patents, Isobe has played a crucial role in advancing the functionality and efficiency of imaging systems.

Latest Patents

Among Isobe's latest innovations are significant advancements in developing cartridges and rollers designed for electrophotographic image forming apparatuses. His patents include a process cartridge that is detachably mountable to a main assembly, featuring a developing roller equipped with an elastic roller portion and a shaft portion. This innovative design enhances the development of electrostatic latent images on photosensitive members. Another noteworthy patent details a cartridge for replenishing developer, which integrates a memory device and a control system. This system uses multiple developer replenishing units, each with storage for both identification and history information. This technology enables the accurate analysis of the utilization amount of the developing replenishing unit, optimizing its lifecycle and enhancing image output quality.

Career Highlights

Hironobu Isobe's career has been primarily associated with Canon Kabushiki Kaisha, a global leader in imaging and optical products. His relentless pursuit of innovation has led to the development of technologies that improve the reliability and performance of imaging devices. Isobe's inventions not only demonstrate his technical expertise but also reflect a deep understanding of market needs and user experience.

Collaborations

Isobe has collaborated with notable coworkers such as Yasufumi Yoshino and Kenji Matsuda, further enhancing the innovative capacity of their team at Canon. Their combined expertise has resulted in groundbreaking advancements that have significantly shaped the future of electrophotographic technologies.

Conclusion

Hironobu Isobe's contributions to the electrophotographic field exemplify the importance of continuous innovation. With a wealth of patents that address both current and emerging challenges in imaging technology, Isobe remains a pivotal figure in the industry, driving advancements that enhance the performance and effectiveness of imaging systems. His work not only highlights his capabilities as an inventor but also sets a standard for those who aspire to innovate in this ever-evolving field.

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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