Tokyo, Japan

Takamasa Usui

This inventor holds 50 USPTO granted patents and 2 published patent applications, primarily in Semiconductor Devices. Top assignees: Kabushiki Kaisha Toshiba, Toshiba Memory Corporation, Ibiden Company Limited. Active years: 1998-2025.

USPTO Granted Patents = 50 

% Patents Active = 50.0

Average Co-Inventor Count = 3.3

ph-index = 12

Forward Citations = 470(Granted Patents)

Forward Citations (Not Self Cited) = 457(Dec 10, 2025)


Location History:

  • Wappingers Falls, NY (US) (1998)
  • Kawasaki, JP (2000 - 2005)
  • Kanagawa-ken, JP (1999 - 2009)
  • Tokyo, JP (2006 - 2012)
  • Fujisawa, JP (2003 - 2013)
  • Selkirk, NY (US) (2010 - 2014)
  • Mie-ken, JP (2017)
  • Koto, JP (2020)
  • Yokkaichi, JP (2015 - 2023)

Company Filing History:


Years Active: 1998-2025

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Areas of Expertise:
Memory Device
Nonvolatile Semiconductor Memory
Semiconductor Manufacturing
Interconnect Structure
Reliability Evaluation
Dynamic Random Access Memory
Capacitor Technology
Silicide Layer
Barrier Film
Low Dielectric Insulating Film
Wiring Structure
Thermal Management
50 patents (USPTO):Explore Patents

Title: The Innovative Journey of Takamasa Usui

Introduction: Takamasa Usui is a pioneering inventor hailing from Tokyo, Japan, known for his groundbreaking contributions to various technological fields.

Latest Patents: Takamasa Usui holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his versatility and forward-thinking approach.

Career Highlights: With a career spanning over two decades, Usui has worked for leading tech companies in Japan, spearheading research and development projects that have led to significant advancements in the industry.

Collaborations: Throughout his career, Takamasa Usui has collaborated with top researchers, engineers, and scientists both locally and internationally, fostering a culture of innovation and knowledge exchange.

Conclusion: Takamasa Usui's relentless pursuit of innovation and his passion for pushing the boundaries of technology have solidified his reputation as a visionary inventor in the global tech community.

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