Sakura, Japan

Toshimizu Tomitsuka

This inventor holds 2 USPTO granted patents and 3 published patent applications and 1 EPO patent. Top assignee: Fujikura Limited. Active years: 2006-2018.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshimizu Tomitsuka. Retrieved from https://idiyas.com/inventor/toshimizu-tomitsuka

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 = 50.0


Average Co-Inventor Count = 3.3

ph-index = 1

Forward Citations = 7(Granted Patents)


Location History:

  • Tokyo, JP (2006)
  • Sakura, JP (2018)

Company Filing History:


Years Active: 2006-2018

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2 patents (USPTO):Explore Patents

Title: Innovations of Toshimizu Tomitsuka

Introduction

Toshimizu Tomitsuka is a notable inventor based in Sakura, Japan. He has made significant contributions to the field of input devices and switches, holding a total of 2 patents. His work is characterized by innovative designs that enhance user interaction with technology.

Latest Patents

One of his latest patents is an input device that includes an insulation substrate, a switch element, and a detection portion. The switch element features a fixed electrode portion on the substrate and a movable electrode portion on the main surface side of the substrate. This movable electrode portion is elastically displaceable, allowing it to respond to pressure from an object to be detected, which is an electric conductor. The detection portion can identify capacitance changes caused by the object's movement, enhancing the device's functionality.

Another significant patent is for a switch sheet and switch that utilize a dome-shaped spring. This design allows for a definitive click in the center part of the switch, ensuring effective operation even when miniaturized. The switch sheet boasts long-lasting durability and an improved click ratio, making it ideal for miniature devices that require a satisfying clicking sensation. The construction includes a dome-shaped spring, resin sheeting, and a rigid member with a downward-facing protrusion that opposes the center of the dome-shaped spring.

Career Highlights

Toshimizu Tomitsuka is associated with Fujikura Limited, where he has been able to apply his innovative ideas in practical applications. His work has contributed to advancements in user interface technology, making devices more intuitive and responsive.

Collaborations

He has collaborated with notable coworkers such as Shoji Ajimura and Yohei Kurikawa, further enhancing the innovative environment at Fujikura Limited.

Conclusion

Toshimizu Tomitsuka's contributions to the field of input devices and switches demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of user needs and technological advancements, making him a significant figure in the industry.

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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