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For the Inventor, By the Inventor

Kobe, Japan

Keisuke Nakatsuka

This inventor holds 54 USPTO granted patents and 15 published patent applications and 2 EPO patents, primarily in Semiconductor Memory. Top assignees: Kioxia Corporation, Toshiba Memory Corporation, Kabushiki Kaisha Toshiba. Active years: 2014-2026.

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

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

USPTO Granted Patents = 54 

% Patents Active = 87.0

 

Average Co-Inventor Count = 2.1

ph-index = 3

Forward Citations = 24(Granted Patents)

Forward Citations (Not Self Cited) = 19(Dec 10, 2025)


Location History:

  • Yokohama, JP (2014)
  • Seoul, KR (2015 - 2019)
  • Hyogo, JP (2020 - 2022)
  • Kobe, JP (2015 - 2024)
  • Kobe Hyogo, JP (2020 - 2024)

Company Filing History:

goldMedal31 out of 3,176 
 
Kioxia Corporation
 patents
silverMedal15 out of 2,955 
 
Toshiba Memory Corporation
 patents
bronzeMedal7 out of 53,250 
 
Kabushiki Kaisha Toshiba
 patents
4. 1 out of 11,642 
 
Skhynix Inc.
 patents
5. 1 out of 834,453 
Other
 patents
where one patent can have more than one assignee

Years Active: 2014-2026

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Areas of Expertise:
Semiconductor Memory Device
Storage Device
Data Latch Circuit
Manufacturing Method
Depletion-Type Memory Cell
Wafer Manufacturing
Memory System
Charge Storage Films
Three-Dimensional Arrangement
Control Method
Integrity Check
Chip Bonded
54 patents (USPTO):Explore Patents
1. 12573459 - Semiconductor storage device having depletion-type memory cell transistors (2026-03-10),
2. 12562228 - Data latch circuit and semiconductor storage device (2026-02-24),
3. 12532483 - Semiconductor memory device (2026-01-20),
4. 12507415 - Semiconductor memory device (2025-12-23),
5. 12463164 - Semiconductor memory device (2025-11-04),
6. 12444681 - Semiconductor device and method for manufacturing the same (2025-10-14),
7. 12438111 - Semiconductor device, wafer, and wafer manufacturing method (2025-10-07),
8. 12432937 - Semiconductor memory device with plurality of arrays (2025-09-30),
9. 12384624 - Storage device and control method (2025-08-12),
10. 12382632 - Memory device (2025-08-05),
11. 12381147 - Chip bonded semiconductor memory device with different charge storage films (2025-08-05),
12. 12349359 - Semiconductor memory device (2025-07-01),
13. 12347513 - Semiconductor memory device (2025-07-01),
14. 12300650 - Semiconductor memory device (2025-05-13),
15. 12232325 - Semiconductor storage device (2025-02-18),

Title: Keisuke Nakatsuka - Innovative Inventor from Kobe Hyogo, JP

Introduction: Keisuke Nakatsuka is a renowned inventor hailing from Kobe Hyogo, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Keisuke Nakatsuka holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his versatility and forward-thinking approach to invention.

Career Highlights: With a career spanning over two decades, Nakatsuka has worked with leading research institutions and tech companies, spearheading projects that have revolutionized industries and improved the quality of life for many.

Collaborations: Throughout his career, Keisuke Nakatsuka has collaborated with top engineers, scientists, and designers from around the world, fostering a culture of innovation and excellence in all his projects.

Conclusion: Keisuke Nakatsuka's passion for innovation and his relentless drive to push the boundaries of what is possible make him a true pioneer in the world of inventions, inspiring the next generation of inventors to dream big and create a better future for all.

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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