Kanagawa, Japan

Takahiko Ishizu

USPTO Granted Patents = 68 

Average Co-Inventor Count = 2.3

ph-index = 9

Forward Citations = 274(Granted Patents)

Forward Citations (Not Self Cited) = 231(Oct 12, 2025)


Inventors with similar research interests:


Location History:

  • Atsugi, JP (2017 - 2021)
  • Kanagawa, JP (2014 - 2024)
  • Sagamihara, JP (2022 - 2024)

Company Filing History:


Years Active: 2014-2025

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68 patents (USPTO):

Title: Takahiko Ishizu: Innovator in Semiconductor Technologies

Introduction

Takahiko Ishizu, a prominent inventor based in Kanagawa, Japan, has secured an impressive portfolio of 63 patents throughout his career. His innovative contributions primarily focus on advancing memory devices and arithmetic devices, significantly impacting the semiconductor industry.

Latest Patents

Ishizu's latest patents highlight his expertise in developing efficient memory and arithmetic devices. One notable invention is a memory device characterized by long data retention times and high reliability. This device integrates a driver circuit and multiple memory cells comprising a transistor and a capacitor. A key feature of this innovation is the use of metal oxide in the channel formation region of the transistor, along with a dual-gate system that applies negative potentials during data retention.

Another significant patent addresses the design of an arithmetic device and electronic device aimed at minimizing power consumption while enhancing operational speed. This design consists of multiple CPU and GPU cores, each featuring power gating functions. It includes data retention circuits capable of preserving both analog and digital values, thereby facilitating high-speed operations while suppressing heat generation.

Career Highlights

Ishizu is currently affiliated with Semiconductor Energy Laboratory Co., Ltd., where he continues to push the boundaries of technology. His work has not only garnered numerous patents but also positioned him as a leading figure in the development of cutting-edge semiconductor solutions.

Collaborations

Throughout his career, Takahiko Ishizu has collaborated with esteemed colleagues such as Tatsuya Onuki and Kiyoshi Kato. Together, they contribute to significant advancements in the semiconductor field, sharing insights and expertise that enhance innovation and effectiveness in their projects.

Conclusion

Takahiko Ishizu stands out as a formidable inventor whose work has transformed various aspects of memory and arithmetic devices within the semiconductor industry. With his remarkable portfolio of patents and collaborative efforts with notable colleagues, he continues to lead innovation, shaping the future of technology.

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