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For the Inventor, By the Inventor

Tokyo, Japan

Hiroyuki Ohminato

This inventor holds 2 USPTO granted patents. Top assignee: Dainippon Ink and Chemicals, Incorporated. Active years: 1999-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroyuki Ohminato. Retrieved from https://idiyas.com/inventor/hiroyuki-ohminato

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

USPTO Granted Patents = 2

% Patents Active = 100.0

Average Co-Inventor Count = 8.2

ph-index = 2

Forward Citations = 43(Granted Patents)


Company Filing History:

goldMedal2 out of 630 
 
Dainippon Ink and Chemicals, Incorporated
 patents

Years Active: 1999-2000

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2 patents (USPTO):Explore Patents
1. 6017670 - Electrophotographic toner and process for the preparation thereof (2000-01-25),
2. 5885743 - Electrophotographic toner and process for the preparation thereof (1999-03-23),

Title: Hiroyuki Ohminato: Innovator in Electrophotographic Toner Technology

Introduction

Hiroyuki Ohminato is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of electrophotographic toner technology. With a total of 2 patents to his name, Ohminato's work has advanced the capabilities and performance of toners used in printing applications.

Latest Patents

Ohminato's latest patents include innovative formulations for electrophotographic toners. One of his patents describes a toner with a volume-average particle diameter ranging from 3 to 15 micrometers. This toner features a spherical particulate material with an average circularity of not less than 0.97, encapsulating a colorant within a binder resin. The binder resin is a styrene-acrylic resin with an acid value between 30 and 150, which is at least partially crosslinked. Another patent details a toner comprising spherical particles with a volume average size of 3 to 12 micrometers. This formulation includes a non-crosslinked styrene-acrylic resin and emphasizes improved thermal fixing characteristics and environmental stability.

Career Highlights

Hiroyuki Ohminato is associated with Dainippon Ink and Chemicals, Incorporated, where he has played a crucial role in developing advanced toner technologies. His work has not only enhanced the performance of electrophotographic toners but has also contributed to the overall efficiency of printing processes.

Collaborations

Ohminato has collaborated with notable colleagues such as Hitoshi Takayanagi and Yukiko Soma. Their combined expertise has fostered innovation and development in the field of electrophotographic materials.

Conclusion

Hiroyuki Ohminato's contributions to electrophotographic toner technology exemplify the impact of innovative thinking in the printing industry. His patents reflect a commitment to enhancing toner performance and environmental sustainability.

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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