Sakai, Japan

Hiroshi Hamaguchi

This inventor holds 2 USPTO granted patents. Top assignee: Sharp Kabushiki Kaisha Corporation. Active years: 1979-1980.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroshi Hamaguchi. Retrieved from https://idiyas.com/inventor/hiroshi-hamaguchi-vxr86r48

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


% Patents Active = 100.0

Average Co-Inventor Count = 1.3

ph-index = 2

Forward Citations = 20(Granted Patents)


Company Filing History:


Years Active: 1979-1980

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2 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Hiroshi Hamaguchi

Introduction

Hiroshi Hamaguchi is a notable inventor based in Sakai, Japan, recognized for his contributions to the field of developer technologies. With a focus on improving the efficiency and functionality of developer systems, he holds two significant patents that showcase his inventive spirit and technical prowess.

Latest Patents

Hamaguchi's recent patents include groundbreaking innovations in developer powder supply systems. His first patent details a developer powder supply mechanism that is strategically disposed within a developer reservoir. This system is designed to provide developer powder to a magnet brush developing roller adjacent to a drum surface that holds an electrostatic latent image. The mechanism features a stationary sleeve and a rotatable cylindrical magnet enclosed within it. The innovation is characterized by the unique arrangement of magnetic poles, which produces a distorted magnetic field distribution, enhancing the overall performance of the developer brush.

The second patent developed by Hamaguchi addresses the detection of developer powder amounts within the reservoir. It features a U-shaped diaphragm secured to an opening in the bottom wall of the developer reservoir. When the powder exceeds a predetermined level, the diaphragm bends downward; conversely, it returns to its original position when the powder level drops. This movement is detected using a microswitch, which activates an alarm when the powder quantity falls below the threshold, ensuring users are promptly alerted to low developer levels during operation.

Career Highlights

Hiroshi Hamaguchi's innovative journey has been largely associated with Sharp Kabushiki Kaisha Corporation, where he has leveraged his expertise to develop advanced technologies. His work is instrumental in enhancing the company's product offerings in printing and imaging solutions, marking significant advancements in the industry.

Collaborations

Throughout his career, Hamaguchi has collaborated with notable professionals, including his coworker Tadaaki Kawano. Together, they have contributed to the improvement of developer technologies, fostering innovation through teamwork and shared expertise.

Conclusion

Hiroshi Hamaguchi stands out as a prominent inventor whose patents reflect a commitment to innovation in developer technology. His careful design of systems for powder supply and detection significantly impacts the quality and efficiency of electrostatic imaging processes. With a bright future ahead, Hamaguchi's inventive contributions continue to pave the way for ongoing advancements in the 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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