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For the Inventor, By the Inventor

Yokohama, Japan

Katsuyuki Sekine

This inventor holds 80 USPTO granted patents, primarily in Semiconductor Memory (CPC class H01L27-11556). Top assignees: Kabushiki Kaisha Toshiba, Toshiba Memory Corporation, Kioxia Corporation. Active years: 2006-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsuyuki Sekine. Retrieved from https://idiyas.com/inventor/katsuyuki-sekine

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

USPTO Granted Patents = 80

% Patents Active = 60.0

Average Co-Inventor Count = 4.1

ph-index = 10

Forward Citations = 330(Granted Patents)

Forward Citations (Not Self Cited) = 320(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • Kanagawa, JP (2006 - 2009)
  • Kanagawa-ken, JP (2012 - 2013)
  • Yokohama, JP (2006 - 2014)
  • Mie, JP (2013 - 2014)
  • Mie-ken, JP (2013 - 2016)
  • Yokkaichi Mie, JP (2016)
  • Yokkaichi, JP (2012 - 2022)

Company Filing History:

goldMedal67 out of 53,276 
 
Kabushiki Kaisha Toshiba
 patents
silverMedal12 out of 2,955 
 
Toshiba Memory Corporation
 patents
bronzeMedal1 out of 3,204 
 
Kioxia Corporation
 patents

Years Active: 2006-2022

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Areas of Expertise:
Semiconductor Memory
Nonvolatile Memory
Three-Dimensional Memory
Memory Cells
Charge Storage Layer
Variable Resistance
Isolation Dielectric Films
Resistance Change Layer
Memory Device Manufacturing
Diode
Memory Element
Memory Cell Array
80 patents (USPTO):Explore Patents
1. 11257832 - Semiconductor memory device and method for manufacturing same (2022-02-22),
2. 11183507 - Semiconductor memory device and method for manufacturing same (2021-11-23),
3. 11018148 - Semiconductor memory device and method for manufacturing same (2021-05-25),
4. 10686045 - Semiconductor memory device and method for manufacturing same (2020-06-16),
5. 10541311 - Semiconductor memory device and method for manufacturing the same (2020-01-21),
6. 10367000 - Semiconductor device and method for manufacturing same (2019-07-30),
7. 10269821 - Three-dimensional semiconductor memory device and method for manufacturing the same (2019-04-23),
8. 10263008 - Semiconductor memory device and method of manufacturing the same (2019-04-16),
9. 10229924 - Semiconductor memory device (2019-03-12),
10. 9966381 - Semiconductor memory device and method for manufacturing the same (2018-05-08),
11. 9847342 - Semiconductor memory device and method for manufacturing same (2017-12-19),
12. 9786678 - Nonvolatile semiconductor memory device and method of manufacturing the same (2017-10-10),
13. 9761605 - Semiconductor memory device (2017-09-12),
14. 9754954 - Non-volatile memory device (2017-09-05),
15. 9735167 - Semiconductor memory device and method for manufacturing the same (2017-08-15),

Title: Katsuyuki Sekine: Innovator in Semiconductor Technology

Introduction

Katsuyuki Sekine, based in Yokohama, Japan, is a prolific inventor with an impressive portfolio of 80 patents. His contributions primarily focus on semiconductor technology, which plays a crucial role in modern electronics.

Latest Patents

Among his latest innovations, Sekine has developed a semiconductor memory device and a method for manufacturing the same. This device features a semiconductor pillar that extends in a first direction, with a first electrode crossing it in another direction. The architecture includes multiple insulating films and conductive layers, enhancing the efficiency and functionality of semiconductor memory solutions.

Career Highlights

Sekine has held significant roles in esteemed organizations, including Kabushiki Kaisha Toshiba and Toshiba Memory Corporation. His work at these companies has positioned him as a leading figure in the development of advanced semiconductor technologies.

Collaborations

Throughout his career, Sekine has collaborated with notable professionals, including Yoshio Ozawa and Ryota Fujitsuka. These partnerships have fostered innovation and advancements in semiconductor memory devices, resulting in impactful patents that push the boundaries of technology.

Conclusion

Katsuyuki Sekine's contributions to the field of semiconductor technology are vast and influential. With 80 patents to his name and ongoing innovations, he continues to shape the future of memory devices, making a lasting impact on the electronics 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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