Ibaraki, Japan

Kazuyoshi Tokunaga

This inventor holds 13 USPTO granted patents. Top assignees: Hitachi Koki Co., Ltd., Hitachi, Ltd., Ricoh Printing Systems, Ltd.. Active years: 1982-2008.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuyoshi Tokunaga. Retrieved from https://idiyas.com/inventor/kazuyoshi-tokunaga

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


% Patents Active = 84.6

Average Co-Inventor Count = 3.6

ph-index = 7

Forward Citations = 385(Granted Patents)


Location History:

  • Katsuta, JP (1983 - 1997)
  • Hitachinaka, JP (1998 - 2004)
  • Ibaraki, JP (1982 - 2008)

Company Filing History:


Years Active: 1982-2008

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13 patents (USPTO):Explore Patents

Title: Innovations of Kazuyoshi Tokunaga: A Pioneer in Image Processing Technologies

Introduction: Kazuyoshi Tokunaga, an inventive mind from Ibaraki, Japan, has made significant contributions to the field of image processing and printing technologies. With a remarkable portfolio of 13 patents, Tokunaga's work has paved the way for advancements in how information is recorded and processed, particularly in ways that transcend traditional visibility.

Latest Patents: Among Tokunaga's notable innovations are his latest patents, which include a method and image forming apparatus, along with a printing system designed for recording invisible information. This cutting-edge technology revolutionizes data storage by allowing invisible information to be recorded in pixel form and at a density imperceptible to the naked eye. In addition to this, he developed a comprehensive document processing method tailored for use with a print system that incorporates a computer and printer. This method streamlines the process of printing and storing documents in various formats, showcasing Tokunaga's ability to fuse creativity with functionality in technological development.

Career Highlights: Throughout his career, Tokunaga has been associated with notable companies, including Hitachi Koki Co., Ltd. and Hitachi, Ltd. At these organizations, he has honed his skills and expertise, contributing to numerous projects that have positioned him as a key player in the industry. His knowledge and innovation have significantly enhanced the effectiveness of printing and image processing systems.

Collaborations: Tokunaga has collaborated with esteemed colleagues, including Masayasu Anzai and Kazuyuki Mitome. These partnerships have not only fostered a culture of innovation but have also led to the realization of groundbreaking technologies within the image processing domain.

Conclusion: Kazuyoshi Tokunaga's inventive spirit and commitment to advancing technology are evident through his impressive patent portfolio and collaborative efforts. His ongoing contributions to the field of image processing and printing systems ensure that he remains a significant figure in the landscape of modern inventions, influencing how information is captured and utilized in our world today.

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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