Chiba, Japan

Hiroshi Yoshinaga

This inventor holds 228 USPTO granted patents and 7 published patent applications and 31 EPO patents, primarily in Image Forming Technology (CPC class G03G2215-2035). Top assignees: Ricoh Company, Ltd., Ricoh Corporation. Active years: 1996-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroshi Yoshinaga. Retrieved from https://idiyas.com/inventor/hiroshi-yoshinaga

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

Calculating rank
USPTO Granted Patents = 228 

% Patents Active = 70.6

 

Average Co-Inventor Count = 6.7

ph-index = 21

Forward Citations = 1,497(Granted Patents)

Forward Citations (Not Self Cited) = 853(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • Chiba-ken, JP (2003 - 2014)
  • Ichikawa, JP (1996 - 2016)
  • Tokyo, JP (2005 - 2018)
  • Chiba, JP (2001 - 2024)

Company Filing History:


Years Active: 1996-2026

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Areas of Expertise:
Image Forming Apparatus
Fixing Device
Heating Device
Nip Formation
Thermal Conduction
Sheet Conveying
Lubricant Management
Airflow Path
228 patents (USPTO):Explore Patents

Title: Hiroshi Yoshinaga: Innovator Extraordinaire from Chiba

Introduction:

Meet Hiroshi Yoshinaga, a prolific inventor hailing from the vibrant city of Chiba, Japan. With an astounding number of 209 patents to his name, Yoshinaga has made groundbreaking contributions to various technological fields. This article explores his latest patents, career highlights, collaborations, and celebrates his remarkable achievements.

Latest Patents:

Yoshinaga's most recent patents highlight his expertise in developing sophisticated technologies for conveyance devices, liquid discharge apparatus, and post-processing apparatuses. One notable invention is a conveyance device featuring a conveyor that efficiently transports sheets. This device incorporates a ventilator that strategically adjusts air capacity, enhancing the mechanism's effectiveness during sheet conveyance.

In another groundbreaking patent, Yoshinaga introduces a novel nip former, fixing device, and image forming apparatus. Here, he employs an endless belt and pressure rotator, incorporating an anodic oxidation coating on an aluminum base. This innovative approach ensures optimal performance and longevity of the nip forming portion, greatly improving the image forming process.

Career Highlights:

During his groundbreaking career, Yoshinaga has made significant contributions to leading companies in the industry, such as Ricoh Company, Ltd. and Ricoh Company, Limited. His inventive prowess has steered these organizations towards innovative advancements while establishing himself as a key figure in technological development.

Collaborations:

Yoshinaga's dedication to innovation has often involved collaborations with esteemed colleagues. Among his notable collaborators are Kenji Ishii and Toshihiko Shimokawa. Together, they have combined their expertise and brought forth remarkable advancements, pushing the boundaries of technological possibilities.

Conclusion:

Hiroshi Yoshinaga's remarkable portfolio of 209 patents showcases his unwavering commitment to technological innovation. With his latest inventions in the realm of conveyance devices and image forming apparatuses, Yoshinaga demonstrates his ability to tackle complex challenges with visionary solutions. The collaborative efforts he has fostered with like-minded professionals further highlight his dedication to pushing the limits of what is possible. As an invaluable asset to the world of inventions, Hiroshi Yoshinaga's impact will continue to shape technological landscapes for years to come.

For more information about Hiroshi Yoshinaga and other innovative inventors, please visit our website at idiyas.com.

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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