Kawasaki, Japan

Yasuo Itoh

This inventor holds 76 USPTO granted patents, primarily in Semiconductor Memory (CPC class 3651). Top assignees: Kabushiki Kaisha Toshiba, Victor Company of Japan, Limited, Hokuriku Pharmaceutical Co., Ltd.. Active years: 1976-2006.


% Patents Active = 94.7

Average Co-Inventor Count = 3.2

ph-index = 24

Forward Citations = 2,285(Granted Patents)

Forward Citations (Not Self Cited) = 2,239(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Tokyo, JA (1976 - 1978)
  • Tokyo, JP (1978 - 1988)
  • Fukui, JP (1986 - 1988)
  • Edamitsu, Yahatahigashi-ku, Kitakyusyu-shi, Fukuoka, JP (1989)
  • Katsuyamashi, JP (1985 - 1991)
  • Kanagawa-ken, JP (1999)
  • Yokohama, JP (1987 - 2005)
  • Kawasaki, JP (1989 - 2006)

Company Filing History:


Years Active: 1976-2006

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Areas of Expertise:
Non-volatile Memory
Semiconductor Device
NAND Cell Structure
High Voltage Generator
Variable Voltage Circuit
Electrically Erasable Memory
Memory System
Verify Function
Ferro-electric Memory
Multivalue Data Storage
Picture Switching Apparatus
76 patents (USPTO):Explore Patents

Title: Yasuo Itoh: Pioneering Innovation in Semiconductor Memory Devices

Introduction: Yasuo Itoh, a visionary inventor hailing from Kawasaki, Japan, is renowned for his relentless pursuit of excellence and passion for innovation. With an impressive portfolio of 76 patents, Itoh has made significant contributions to the field of technology, inspiring future generations of inventors and innovators.

Latest Patents: Among his latest patents is the "Non-volatile semiconductor memory device and memory system using the same." This groundbreaking invention aims to shorten the time required for program verify and erase verify operations while suppressing the change of threshold values of memory cells executed repetitively. It allows for the simultaneous judgment of operation effectiveness for all bit lines post-program and erase operations without altering the column address.

Career Highlights: Throughout his illustrious career, Yasuo Itoh has held key roles at prestigious companies such as Kabushiki Kaisha Toshiba and Victor Company of Japan, Limited. His expertise and dedication have played a pivotal role in shaping the landscape of semiconductor memory devices.

Collaborations: Itoh has collaborated closely with industry peers, including Yoshihisa Iwata and Masaki Momodomi, to drive innovation and push the boundaries of technology further. Together, they have worked on projects that have revolutionized the field of semiconductor memory devices.

Conclusion: Yasuo Itoh's unwavering dedication to innovation and his outstanding contributions to the world of technology have solidified his legacy as a visionary inventor. His remarkable accomplishments continue to shape the future of semiconductor memory devices, leaving an indelible mark on the industry.

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