Shizuoka, Japan

Kazuhiko Umemura

This inventor holds 46 USPTO granted patents and 9 published patent applications and 12 EPO patents, primarily in Ink And Toner Technology. Top assignee: Ricoh Company, Ltd.. Active years: 1990-2023.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuhiko Umemura. Retrieved from https://idiyas.com/inventor/kazuhiko-umemura

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

Calculating rank
USPTO Granted Patents = 46 

% Patents Active = 82.6

 

Average Co-Inventor Count = 6.5

ph-index = 21

Forward Citations = 1,047(Granted Patents)


Location History:

  • Numazu, JP (1990)
  • Susono, JP (1991 - 1998)
  • Suntoh-gun, JP (1998)
  • Tokyo, JP (2002)
  • Shizuoka-ken, JP (1999 - 2006)
  • Yokohama, JP (2006)
  • Sunto-gun, JP (2007)
  • Suntou-gun, JP (2002 - 2010)
  • Shizuoka, JP (2004 - 2019)
  • Kanagawa, JP (2019 - 2023)

Company Filing History:


Years Active: 1990-2023

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Areas of Expertise:
Ink
Toner
Image Forming Apparatus
Developer Container
Electrophotography
Printing Method
Inkjet Recording Device
Processing Fluid
Toner Feeder
Recording Method
Electrostatic Image
Additives
46 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Kazuhiko Umemura from Shizuoka, Japan

Introduction: Kazuhiko Umemura is a prolific inventor based in Shizuoka, Japan, known for his significant contributions to the field of printing technologies. With 46 patents to his name, Umemura has demonstrated exceptional creativity and technical expertise throughout his career, particularly while working at Ricoh Company, Ltd.

Latest Patents: Among Umemura's latest innovations are several groundbreaking patents in the printing domain. One of his recent patents describes an ink that comprises water and Pigment Red 269, combined with a specific compound and at least one silicone compound or acetylene glycol compound. Notably, the proportion of this compound in relation to Pigment Red 269 is capped at 2.0 percent by mass. Furthermore, another patent outlines a method of printing that involves applying a processing fluid and white ink to a substrate, with the processing fluid containing tri-valent metal salt and a nonionic urethane resin, while the white ink includes a white pigment, a resin, and water. These advancements reflect a keen understanding of chemical interactions and product performance in innovative printing solutions.

Career Highlights: Throughout his career at Ricoh Company, Ltd., Kazuhiko Umemura has established himself as a key figure in developing advanced printing technologies. His commitment to innovation has significantly contributed to the company's reputation as a leader in the printing industry. With his numerous patents, he has not only enhanced product offerings but has also pushed the boundaries of what is possible in ink and printing technology.

Collaborations: Umemura's work is further enriched through collaboration with talented colleagues such as Hideki Sugiura and Satoshi Mochizuki. These relationships foster an environment of creativity and shared knowledge, enabling the team to tackle complex challenges and drive further innovations within the industry.

Conclusion: Kazuhiko Umemura exemplifies the spirit of innovation in the printing technology arena. His extensive patent portfolio and collaborative efforts at Ricoh Company, Ltd. highlight his dedication to advancing the field. As he continues to push the envelope of what is possible with inks and printing methods, Umemura reinforces the importance of creativity and scientific inquiry in developing groundbreaking technologies.

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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