Yokohama, Japan

Tatsumi Nagasawa

This inventor holds 7 USPTO granted patents and 2 published patent applications. Top assignees: Lenovo (Singapore) Pte. Ltd., International Business Machines Corporation. Active years: 2000-2023.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tatsumi Nagasawa. Retrieved from https://idiyas.com/inventor/tatsumi-nagasawa

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

USPTO Granted Patents = 7 

% Patents Active = 85.7

Average Co-Inventor Count = 2.8

ph-index = 2

Forward Citations = 44(Granted Patents)


Location History:

  • Kawasaki, JP (2000)
  • Machida, JP (2012)
  • Tokyo, JP (2009 - 2015)
  • Yokohama, JP (2019 - 2021)
  • Kanagawa, JP (2023)

Company Filing History:


Years Active: 2000-2023

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7 patents (USPTO):Explore Patents

Title: Innovations of Tatsumi Nagasawa: Pioneering Information Processing Technologies

Introduction

Tatsumi Nagasawa, an accomplished inventor based in Yokohama, Japan, has made a significant impact in the realm of information processing technology. With a remarkable portfolio of seven patents, Nagasawa has been at the forefront of developing systems that enhance the usability and functionality of display technologies.

Latest Patents

Among his latest innovations is an "Information Processing Device and Control Method." This invention details a method for controlling a display across two or more non-overlapping areas, including distinct first and second display areas. The device features a display mode switching unit that allows users to toggle between a combined display mode and a segmented display mode.

Another notable patent is related to a "Display Screen Configuration." This invention outlines an apparatus that incorporates a first display unit alongside a touch screen with a secondary display unit and detection capabilities. The start-up control unit of this device is designed to show index information on the touch screen while configuring a display on the primary unit. A control method for the apparatus is also included, facilitating the display of information based on touch operations agreed upon by the user.

Career Highlights

Throughout his career, Tatsumi Nagasawa has contributed his expertise to prominent technology firms, including Lenovo (Singapore) Pte. Ltd. and International Business Machines Corporation (IBM). His work within these organizations has been pivotal in advancing display and information processing technologies.

Collaborations

Nagasawa has collaborated with esteemed colleagues such as Junichi Asoh and Keita Ishii, sharing insights and innovations that have furthered their collective work in the field. These partnerships have not only enriched his professional experience but have also propelled the development of groundbreaking technologies.

Conclusion

Tatsumi Nagasawa stands out as a notable inventor whose contributions to information processing devices have laid the groundwork for future advancements in display technology. With his innovative spirit and collaborative approach, Nagasawa continues to influence the tech industry, enhancing the way users interact with digital information.

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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