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For the Inventor, By the Inventor

Kanagawa, Japan

Hideo Yoshizawa

This inventor holds 103 USPTO granted patents and 2 published patent applications and 9 EPO patents, primarily in Toner Container Technology (CPC class G03G15-0872). Top assignees: Ricoh Company, Ltd., Nippon Sheet Glass Company, Limited, Namco Limited. Active years: 1986-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hideo Yoshizawa. Retrieved from https://idiyas.com/inventor/hideo-yoshizawa

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

Calculating rank
USPTO Granted Patents = 103 

% Patents Active = 78.6

 

Average Co-Inventor Count = 2.5

ph-index = 24

Forward Citations = 1,877(Granted Patents)

Forward Citations (Not Self Cited) = 1,725(Dec 10, 2025)


Inventors with similar research interests:

🔬 See more inventors

Location History:

  • Urawa, JP (1998 - 2003)
  • Saitama-ken, JP (2003)
  • Tokyo, JP (2004)
  • Osaka, JP (1988 - 2006)
  • Sagamihara, JP (2002 - 2009)
  • Yokohama, JP (2000 - 2011)
  • Saitama, JP (2001 - 2012)
  • Ohta-ku, JP (2012 - 2017)
  • Kanagawa, JP (1986 - 2023)

Company Filing History:

goldMedal71 out of 28,957 
 
Ricoh Company, Ltd.
 patents
silverMedal29 out of 1,174 
 
Nippon Sheet Glass Company, Limited
 patents
bronzeMedal2 out of 199 
 
Namco Limited
 patents
4. 1 out of 114 
 
Namco Bandai Games, Ltd.
 patents
5. 1 out of 276 
 
The University of Sydney
 patents
where one patent can have more than one assignee

Years Active: 1986-2026

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Areas of Expertise:
Toner Container
Image Forming Apparatus
Developing Device
Process Cartridge
Powder Container
Developer Conveyor
Removable Component
Driving Force Transmission
Shutter Mechanism
Imaging Device
Changeable Conveyance Paths
Rotatable Container Body
103 patents (USPTO):Explore Patents
1. D1123030 - Toner container (2026-04-21),
2. 12422764 - Toner container and image forming apparatus (2025-09-23),
3. 12399448 - Toner container and image forming apparatus (2025-08-26),
4. D1062861 - Toner container (2025-02-18),
5. 11803134 - Powder container (2023-10-31),
6. 11754947 - Toner container including a rotatable container body, a gear, and a held portion (2023-09-12),
7. 11372347 - Powder container (2022-06-28),
8. 11048189 - Toner container, toner supply device, and image forming apparatus including a sheet member with two portions to move toner (2021-06-29),
9. 10935905 - Powder container (2021-03-02),
10. 10895827 - Developer conveyor having three blades (2021-01-19),
11. 10809648 - Powder container (2020-10-20),
12. 10564592 - Image forming apparatus including a removable component which is held by holder (2020-02-18),
13. 10534290 - Powder container (2020-01-14),
14. 10520856 - Developing device, process cartridge, and image forming apparatus incorporating same (2019-12-31),
15. 10409196 - Image forming apparatus including developing devices, developing containers, and changeable conveyance paths between the developing devices and the developing containers (2019-09-10),

Title: The Innovative Journey of Hideo Yoshizawa

Introduction: Hideo Yoshizawa, a pioneering inventor hailing from Kanagawa, Japan, has made significant contributions to the world of technology and innovation through his groundbreaking inventions.

Latest Patents: Yoshizawa's latest patents showcase his ongoing commitment to pushing the boundaries of technological advancement in various fields, including robotics, artificial intelligence, and renewable energy.

Career Highlights: Throughout his illustrious career, Yoshizawa has been recognized for his innovative spirit and dedication to creating solutions that address complex challenges. His inventions have not only revolutionized industries but have also improved the quality of life for many around the globe.

Collaborations: Yoshizawa has collaborated with leading research institutions, universities, and tech companies to further develop and commercialize his inventions. These partnerships have been instrumental in bringing his visionary ideas to fruition and making a lasting impact on society.

Conclusion: Hideo Yoshizawa's relentless pursuit of innovation and his passion for creating transformative technologies have solidified his reputation as a trailblazing inventor in the world of patents and inventions. His legacy continues to inspire future generations to think creatively and push the boundaries of what is possible in the realm of 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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