Tokyo, Japan

Tadashi Yamaguchi

This inventor holds 98 USPTO granted patents and 17 published patent applications and 5 EPO patents, primarily in Semiconductor Devices (CPC class H01L27-11568). Top assignees: Renesas Electronics Corporation, Oki Electric Industry Co., Ltd., Honda Motor Co., Ltd.. Active years: 1992-2026.

USPTO Granted Patents = 98 

% Patents Active = 68.4

 

Average Co-Inventor Count = 1.3

ph-index = 9

Forward Citations = 600(Granted Patents)

Forward Citations (Not Self Cited) = 570(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Yokohama, JP (1993 - 2015)
  • Wako, JP (2013 - 2022)
  • Kanagawa, JP (2013 - 2022)
  • Saitama, JP (2012 - 2023)
  • Tokyo, JP (1992 - 2024)

Company Filing History:


Years Active: 1992-2026

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Areas of Expertise:
Ferroelectric Memory
Semiconductor Manufacturing
Rotary Electric Machine
Epitaxial Layers
Image Processing
Insulating Member
Electric Rotary Machine
High Quality Imaging
Stator Design
Metal Oxide Film
Luminance Images
Silicides
98 patents (USPTO):Explore Patents

Title: Innovations of Tadashi Yamaguchi: A Leader in Semiconductor Technology

Introduction: Tadashi Yamaguchi, based in Tokyo, Japan, is a prominent inventor in the field of semiconductor technology. With an impressive portfolio of 89 patents, Yamaguchi has made significant contributions to the industry, establishing himself as a leader in innovation. His work has paved the way for advancements in semiconductor devices, with a focus on improving performance and efficiency.

Latest Patents: Among Yamaguchi's latest patents is a groundbreaking semiconductor device that includes a semiconductor substrate, insulating film, first conductive film, ferroelectric film, insulating layer, and multiple plugs. This innovative device features a unique structure where the semiconductor substrate incorporates source and drain regions, enabling enhanced functionality. Another notable patent relates to a method of manufacturing a semiconductor device, involving the formation of amorphous films, crystallization processes, and the development of orthorhombic ferroelectric films. Each of these patents emphasizes Yamaguchi's expertise in materials, such as hafnium and oxygen, and showcases his dedication to advancing semiconductor technology.

Career Highlights: Throughout his career, Tadashi Yamaguchi has worked with notable companies, including Renesas Electronics Corporation and Oki Electric Industry Co., Ltd. His experience in these esteemed organizations has allowed him to contribute to various groundbreaking projects and innovations in semiconductor technology. Yamaguchi's deep understanding of materials and device architecture has positioned him as a sought-after expert in his field.

Collaborations: Yamaguchi has collaborated with several esteemed colleagues, including Masashi Inoue and Keiichiro Kashihara. Their teamwork has fostered a creative environment conducive to innovation, allowing them to tackle complex engineering challenges and push the boundaries of semiconductor technology.

Conclusion: In conclusion, Tadashi Yamaguchi stands out as a visionary inventor in the semiconductor industry. His extensive patent portfolio and notable collaborations reflect his commitment to innovation and excellence in technology. As semiconductor devices continue to evolve, Yamaguchi's contributions will undoubtedly play a crucial role in shaping the future of the industry.

Profile summary based on public USPTO records.
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