Kamakura, Japan

Keisuke Yonehama

This inventor holds 24 USPTO granted patents and 3 published patent applications, primarily in Semiconductor Memory. Top assignees: Toshiba Memory Corporation, Kioxia Corporation, Kabushiki Kaisha Toshiba. Active years: 2006-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keisuke Yonehama. Retrieved from https://idiyas.com/inventor/keisuke-yonehama

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank
USPTO Granted Patents = 24 

% Patents Active = 87.5

Average Co-Inventor Count = 7.1

ph-index = 4

Forward Citations = 58(Granted Patents)


Location History:

  • Mie-ken, JP (2006)
  • Mie, JP (2009)
  • Yokohama, JP (2013)
  • Kamakura, JP (2016 - 2019)
  • Kanagawa, JP (2016 - 2020)
  • Kamakura Kanagawa, JP (2016 - 2024)

Company Filing History:


Years Active: 2006-2025

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Areas of Expertise:
Semiconductor Memory Device
Memory Controller
Gate Electrode
Diffusion Layer
Manufacturing Method
Semiconductor Device
3D Stacking
Thermal Management
Data Storage
Integrated Circuit
Memory Architecture
Memory Efficiency
24 patents (USPTO):Explore Patents

Title: Keisuke Yonehama: Innovator in Semiconductor Technology

Introduction

Keisuke Yonehama is a prominent inventor based in Kamakura, Kanagawa, Japan, known for his significant contributions to the field of semiconductor technology. With 24 patents to his name, Yonehama has established himself as a critical figure in advancing memory device technologies.

Latest Patents

His latest innovations in semiconductor memory devices showcase his creative approach. One notable patent describes a semiconductor memory device that includes a conducting layer and an insulating layer positioned above a semiconductor substrate, along with multiple pillars that extend perpendicularly to the substrate’s surface. A unique feature of this design is the plate between the pillars that features convex and non-convex portions. Another important patent involves a semiconductor memory device that incorporates first and second memory cells, a first and second word line, and a control unit. This innovative design allows efficient erasing operations by applying different voltage levels to the word lines during operation.

Career Highlights

Keisuke Yonehama has had a fruitful career with significant contributions while working at major corporations such as Toshiba Memory Corporation and Kioxia Corporation. His work has played a key role in developing advanced semiconductor technologies that have impacted various applications in electronics.

Collaborations

Throughout his career, Yonehama has collaborated with notable colleagues, including Toshifumi Minami and Atsuhiro Sato. These collaborations have fostered innovation and have been pivotal in driving the technology forward.

Conclusion

With a robust portfolio of patents and collaborations that span several years, Keisuke Yonehama continues to be an influential figure in the realm of semiconductor innovations. His work not only enhances the efficiency and functionality of memory devices but also contributes to the broader field of electronics, securing his place as a pioneering inventor in this essential industry.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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