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For the Inventor, By the Inventor

Tokyo, Japan

Takamasa Usui

USPTO Granted Patents = 50 

Average Co-Inventor Count = 3.3

ph-index = 12

Forward Citations = 469(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:

goldMedal35 out of 52,735 
 
Kabushiki Kaisha Toshiba
 patents
silverMedal5 out of 2,955 
 
Toshiba Memory Corporation
 patents
bronzeMedal3 out of 135 
 
Semiconductor Technology Academic Research Center
 patents
4. 3 out of 10,326 
 
Tokyo Electron Limited
 patents
5. 3 out of 1,481 
 
Ibiden Company Limited
 patents
6. 3 out of 164,197 
 
International Business Machines Corporation
 patents
7. 3 out of 2,750 
 
Kioxia Corporation
 patents
8. 2 out of 58 
 
Toshiba America Electronic Components, Inc.
 patents
where one patent can have more than one assignee

Years Active: 1998-2025

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Areas of Expertise:
Memory Device
Semiconductor Device
Nonvolatile Semiconductor Memory
Reliability Evaluation
Dynamic Random Access Memory
Interconnect Structure
Capacitor Manufacturing
Wiring Structure
Barrier Film
Heat Diffusion
Silicide Layer
Low Dielectric Constant
50 patents (USPTO):Explore Patents
1. 12272676 - Memory device (2025-04-08),
2. 11817428 - Memory device (2023-11-14),
3. 11270980 - Memory device (2022-03-08),
4. 10879137 - Template, template component, and semiconductor device manufacturing method (2020-12-29),
5. 10868029 - Staggered semiconductor memory device (2020-12-15),
6. 10741527 - Memory device (2020-08-11),
7. 10297578 - Memory device (2019-05-21),
8. 9887262 - Semiconductor device (2018-02-06),
9. 9589974 - Nonvolatile semiconductor memory device and method for manufacturing same (2017-03-07),
10. 9196609 - Semiconductor device (2015-11-24),
11. 8772942 - Interconnect structure employing a Mn-group VIIIB alloy liner (2014-07-08),
12. 8716134 - Interconnect structure employing a Mn-group VIIIB alloy liner (2014-05-06),
13. 8456186 - Reliability evaluation test apparatus, reliability evaluation test system, contactor, and reliability evaluation test method (2013-06-04),
14. 8377822 - Semiconductor device and manufacturing method thereof (2013-02-19),
15. 8133813 - Semiconductor device with a barrier film (2012-03-13),

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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