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For the Inventor, By the Inventor

Suntou-gun, Japan

Harunobu Ogaki

This inventor holds 64 USPTO granted patents and 2 published patent applications and 33 EPO patents, primarily in Electrophotographic Technology (CPC class G03G). Top assignee: Canon Kabushiki Kaisha. Active years: 2006-2023.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Harunobu Ogaki. Retrieved from https://idiyas.com/inventor/harunobu-ogaki

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

USPTO Granted Patents = 64 

% Patents Active = 60.9

 

Average Co-Inventor Count = 4.6

ph-index = 24

Forward Citations = 1,302(Granted Patents)

Forward Citations (Not Self Cited) = 782(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Shizuoka, JP (2006)
  • Suntoh-gun, JP (2008 - 2011)
  • Suntou-gun, JP (2009 - 2020)
  • Oyama, JP (2022 - 2023)

Company Filing History:

goldMedal64 out of 92,994 
 
Canon Kabushiki Kaisha
 patents

Years Active: 2006-2023

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Areas of Expertise:
Electrophotographic
Photosensitive Member
Process Cartridge
Image Forming Apparatus
Charge Transport Layer
Cylindrical Structure
Organic Device
Manufacturing Method
Emulsion
Uneven Structure
Production Process
Matrix-Domain Structure
64 patents (USPTO):Explore Patents
1. 11573499 - Process cartridge and electrophotographic apparatus (2023-02-07),
2. 11320754 - Process cartridge and electrophotographic apparatus (2022-05-03),
3. 11256187 - Process cartridge and electrophotographic apparatus (2022-02-22),
4. 10663913 - Process cartridge and electrophotographic apparatus (2020-05-26),
5. 10545453 - Process cartridge and electrophotographic apparatus (2020-01-28),
6. 10452021 - Process cartridge and electrophotographic image forming apparatus (2019-10-22),
7. 10331052 - Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus (2019-06-25),
8. 10067432 - Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus (2018-09-04),
9. 10031430 - Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus (2018-07-24),
10. 9971257 - Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus (2018-05-15),
11. 9857704 - Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus (2018-01-02),
12. 9851646 - Electrophotographic apparatus and process cartridge (2017-12-26),
13. 9791792 - Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus (2017-10-17),
14. 9651879 - Electrophotographic photosensitive member, method of producing the electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus (2017-05-16),
15. 9575422 - Method of producing electrophotographic photosensitive member, method of producing organic device, and emulsion for charge transporting layer (2017-02-21),

Title: Harunobu Ogaki: Innovator in Electrophotographic Technology

Introduction

Harunobu Ogaki, a distinguished inventor based in Suntou-gun, Japan, has significantly contributed to the field of electrophotographic technology with an impressive portfolio of 64 patents. His innovative work has been instrumental in enhancing the performance and efficiency of electrophotographic systems, particularly focusing on optimizing toner properties and reducing waste.

Latest Patents

Among his recent inventions are two notable patents related to process cartridges and electrophotographic apparatus. The first patent outlines a process cartridge that is detachably attachable to the main body of an electrophotographic apparatus. This cartridge features a developing unit that includes toner made with a toner particle that has a surface containing a polyvalent acid metal salt particle. Additionally, the surface layer of the electrophotographic photosensitive member consists of metal oxide particles, such as aluminum oxide, silicon dioxide, and tin oxide.

The second patent addresses a process cartridge designed to minimize fogging during operation, ultimately leading to reduced toner consumption. This cartridge also contains a developing unit and toner with specialized properties, including a surface comprising a metal salt of a polyvalent acid, sourced from metal elements in Groups 3 to 13. Furthermore, the electrophotographic photosensitive member in this patent is also noted to contain an acrylic or methacrylic resin, enhancing its functionality.

Career Highlights

Harunobu Ogaki has built a prolific career at Canon Kabushiki Kaisha, where he has had a pivotal role in research and development. His expertise in the intricacies of electrophotographic systems has not only led to a substantial number of patents but has also provided vital improvements to the technology utilized in printing and imaging.

Collaborations

Ogaki has collaborated with fellow innovators, including Kazunori Noguchi and Atsushi Okuda, whose combined efforts in research have fostered advancements in the field. Their synergy exemplifies the collaborative spirit within Canon and highlights the importance of teamwork in driving technological innovation.

Conclusion

In conclusion, Harunobu Ogaki's contributions to the field of electrophotography are notable for their innovation and practical application. His latest patents demonstrate a clear focus on improving technology efficiency and reducing waste. As he continues his work at Canon Kabushiki Kaisha, Ogaki remains a key figure in the pursuit of advancements in imaging technology.

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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