Osaka, Japan

Kenzo Tatsumi




Average Co-Inventor Count = 4.5

ph-index = 18

Forward Citations = 916(Granted Patents)

Forward Citations (Not Self Cited) = 795(Oct 12, 2025)


Inventors with similar research interests:


Location History:

  • Kanagawa-ken, JP (1998 - 2004)
  • Yokohama, JP (1996 - 2005)
  • Kanagawa, JP (1999 - 2007)
  • Toyonaka, JP (2007 - 2009)
  • Ohsaka, JP (2008 - 2009)
  • Oosaka, JP (2008 - 2009)
  • Tokyo, JP (2011)
  • Osaka, JP (2009 - 2013)

Company Filing History:


Years Active: 1996-2013

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51 patents (USPTO):Explore Patents

Title: Kenzo Tatsumi: Innovating the Document Imaging Industry

Introduction: Kenzo Tatsumi, a prolific inventor based in Osaka, Japan, has made significant contributions to the field of document imaging with an impressive portfolio of 51 patents. His innovative spirit and attention to detail have propelled him to the forefront of technological advancements in the industry.

Latest Patents: Among Kenzo Tatsumi's recent patents is a revolutionary seal member designed to cover the space between a developing roller and the casing of a developing device. This seal member, crafted with a flexible sheet and a unique reinforcing member, enhances the efficiency and durability of the device. Additionally, his process cartridge and image forming apparatus showcase his expertise in optimizing the functionality of critical components within document imaging systems.

Career Highlights: Kenzo Tatsumi is a valued member of the renowned Ricoh Company, Ltd., a leading global provider of document management solutions. Through his inventive prowess, he has played a key role in shaping the direction of the company's product development strategies and maintaining its competitive edge in the market.

Collaborations: In his collaborative efforts, Kenzo Tatsumi has worked closely with esteemed colleagues such as Yoshiyuki Shimizu and Hirobumi Ooyoshi. Together, they have synergized their talents to drive innovation and bring cutting-edge solutions to the document imaging landscape.

Conclusion: Kenzo Tatsumi's unwavering dedication to innovation and his remarkable ability to transform ideas into tangible assets have established him as a trailblazer in the document imaging domain. His inventive spirit continues to inspire the next generation of inventors and solidify his legacy as a driving force behind technological progress.

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