Tokyo, Japan

Yoshihisa Minakawa

This inventor holds 24 USPTO granted patents, primarily in Electronic Copying Machines. Top assignee: Ricoh Company, Ltd.. Active years: 1988-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshihisa Minakawa. Retrieved from https://idiyas.com/inventor/yoshihisa-minakawa

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


% Patents Active = 91.7

Average Co-Inventor Count = 2.3

ph-index = 8

Forward Citations = 171(Granted Patents)


Location History:

  • Yokohama, JP (1992 - 1993)
  • Chiba, JP (1988 - 1995)
  • Machida, JP (2003)
  • Tokyo, JP (1991 - 2011)

Company Filing History:


Years Active: 1988-2011

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Areas of Expertise:
Sheet Supply Device
Mass Sheet Feed Tray
High-Speed Copying Machine
Dry Electrostatic Copying
Multi-Function Printing
Digital Copying Machine
Image Forming Apparatus
Automatic Document Feeder
Control Panel
Stacker
Electronic Copying Machine
Camera
24 patents (USPTO):Explore Patents

Title: Innovations of Yoshihisa Minakawa: A Pioneer in Sheet Supply Technology

Introduction: Yoshihisa Minakawa, based in Tokyo, JP, is an accomplished inventor known for his contributions to the field of printing technology. With an impressive portfolio of 24 patents, Minakawa has made a significant impact on the advancement of sheet supply and conveyance systems. His innovative approach has led to the development of solutions that enhance operational efficiency and improve the user experience in various printing applications.

Latest Patents: Among Minakawa's latest inventions is a sheet supply/convey supporting device. This innovative device includes a sheet placing unit that comprises a pair of guide members and a supporting plate, creating a space to hold a stack of sheets. The accompanying carriage member supports the sheet placing unit and features a driving mechanism for the efficient lifting and lowering of the sheet unit. Notably, the supporting plate is designed to be movable between an opened position, which allows for easy access to the bottom of the space, and a closed position, ensuring the sheet stack is securely held.

Another notable patent by Minakawa is the mass sheet feed tray, which plays a crucial role in the automation of material handling in printing processes. These inventions highlight his commitment to enhancing productivity and reducing waste in printing technology.

Career Highlights: Minakawa's career has been marked by his tenure at Ricoh Company, Ltd., a leading player in the imaging and electronics sector. His work has consistently focused on improving the functionality of printing technologies, ensuring that they meet the evolving needs of businesses and individuals alike.

Collaborations: Throughout his career, Minakawa has collaborated with talented individuals such as Kazuyoshi Yamada and Masaaki Kabumoto. Together, they have driven forward numerous innovations that have garnered recognition in the industry and contributed to the advancement of printing technology.

Conclusion: Yoshihisa Minakawa exemplifies the spirit of innovation with his groundbreaking patents and dedication to enhancing printing solutions. His work at Ricoh Company, Ltd. and collaborations with esteemed colleagues showcase the importance of teamwork in driving progress. As the printing industry continues to evolve, Minakawa's contributions will undoubtedly remain influential in shaping its future.

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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