Fujisawa, Japan

Hiroshi Nakamura

This inventor holds 196 USPTO granted patents and 4 published patent applications and 3 EPO patents, primarily in Semiconductor Memory (CPC class G11C16-26). Top assignees: Kabushiki Kaisha Toshiba, Pioneer Electronic Corporation, Toshiba Memory Corporation. Active years: 1983-2025.

USPTO Granted Patents = 196 

% Patents Active = 75.0


Average Co-Inventor Count = 2.9

ph-index = 25

Forward Citations = 2,430(Granted Patents)

Forward Citations (Not Self Cited) = 2,259(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • Kunitachi, JP (1983)
  • Fujioka, JP (1986)
  • Fuchu, JP (1987)
  • Katsuta, JP (1987)
  • Hino, JP (1993)
  • Tsukuba-shi, JP (1995)
  • Komoro, JP (1995)
  • Hatano, JP (1995)
  • Tsukuba, JP (1997)
  • Iruma, JP (1997)
  • Kadaira, JP (1998)
  • Kodaira, JP (1999)
  • Minato-ku, Tokyo JP (2003)
  • Nagareyama, JP (2002 - 2006)
  • Saitama-ken, JP (2001 - 2008)
  • Oume, JP (2008)
  • Tokorozawa, JP (1985 - 2010)
  • Nerima-ku, JP (2003 - 2011)
  • Fujiwasa, JP (2012)
  • Chiba, JP (2012)
  • Tokya, JP (2013)
  • Aichi, JP (2014)
  • Hadano, JP (2012 - 2015)
  • Tokyo-to, JP (2015)
  • Okayama, JP (2017)
  • Shanghai, CN (2020)
  • Chigasaki, JP (2021 - 2022)
  • Fujisawa Kanagawa, JP (2016 - 2023)
  • Fujisawa, JP (2002 - 2024)

Company Filing History:

goldMedal124 out of 53,226 
 
Kabushiki Kaisha Toshiba
 patents
silverMedal20 out of 2,861 
 
Pioneer Electronic Corporation
 patents
bronzeMedal9 out of 2,955 
 
Toshiba Memory Corporation
 patents
4. 8 out of 3,151 
 
Kioxia Corporation
 patents
5. 8 out of 1,769 
 
Taiyo Yuden Co., Ltd.
 patents
6. 4 out of 42,717 
 
Hitachi, Ltd.
 patents
7. 3 out of 3,208 
 
Dai Nippon Printing Co., Ltd.
 patents
8. 3 out of 2,916 
 
Tokyo Shibaura Denki Kabushiki Kaisha
 patents
9. 2 out of 5,188 
 
Bridgestone Corporation
 patents
10. 2 out of 11 
 
Fuji Yakuhin Co., Ltd
 patents
11. 2 out of 247 
 
Ntt Mobile Communications Network, Inc.
 patents
12. 2 out of 2,676 
 
Pioneer Corporation
 patents
13. 2 out of 80 
 
Sei Optifrontier Co., Ltd.
 patents
14. 1 out of 112 
 
Central Research Institute of Electric Power Industry
 patents
15. 1 out of 2 
 
International Superconductivity Technology Center, the Juridicial Foundation
 patents
16. 1 out of 1,328 
 
Japan Science and Technology Agency
 patents
17. 1 out of 1,136 
 
Kabushiki Kaisha Yaskawa Denki
 patents
18. 1 out of 3,106 
 
Konica Corporation
 patents
19. 1 out of 4,927 
 
Ntt Docomo, Inc.
 patents
20. 1 out of 22 
 
Swcc Showa Cable Systems Co., Ltd.
 patents
21. 4 out of 834,350 
Other
 patents
where one patent can have more than one assignee

Years Active: 1983-2025

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Areas of Expertise:
Nonvolatile Memory
Semiconductor Device
Integrated Circuit
Optical Fiber
Antireflection Film
Fast Reactor
EEPROM
Single-Channel Transistor
Neutron Shield
Tape-Shaped Oxide
Dual Latch Sense Amplifier
Display Device
196 patents (USPTO):Explore Patents

Title: Hiroshi Nakamura: Pioneering Innovator in Semiconductor Memory Devices

Introduction:

Hiroshi Nakamura, a brilliant inventor based in Fujisawa, Japan, has left an indelible mark in the field of semiconductor memory devices. With an impressive portfolio of 171 patents and a career spanning renowned companies like Kabushiki Kaisha Toshiba and Toshiba Memory Corporation, Nakamura's contributions have revolutionized the industry. This article delves into his latest patents, career highlights, notable collaborations, and emphasizes the significance of his work.

Latest Patents:

Among Nakamura's recent patents, two stand out as key advancements in the semiconductor memory device domain. First, the "Semiconductor Memory Device" patent introduces a memory cell configuration that enhances memory performance. By utilizing a combination of transistors, bit lines, and word lines, this innovation improves overall memory functionality and efficiency.

Furthermore, Nakamura's second latest patent, titled "Semiconductor Memory Device," showcases his focus on erasing operations. This patent introduces a control unit that applies specific voltages to different word lines, enabling targeted erasure of memory cells. Such advancements contribute to the development of more efficient and reliable semiconductor memory devices.

Career Highlights:

Throughout his career, Nakamura has consistently demonstrated expertise and innovation in semiconductor memory devices. Working with notable companies like Kabushiki Kaisha Toshiba and Toshiba Memory Corporation, he has played a pivotal role in their research and development initiatives in this field. Nakamura's patents are a testament to his exceptional knowledge and inventiveness.

Collaborations:

Nakamura has had the privilege of collaborating with talented individuals in his journey as an inventor. Kenichi Imamiya and Koji Hosono are two esteemed coworkers who have worked closely with Nakamura. Their collaboration has undoubtedly fueled creativity and facilitated the execution of groundbreaking ideas that have shaped the semiconductor memory device industry.

Conclusion:

Hiroshi Nakamura has proven himself to be an accomplished innovator in the field of semiconductor memory devices. With an impressive patent count of 171, his expertise and ingenuity have advanced the capabilities and efficiency of memory cell configurations. Collaborations with notable coworkers and contributions to esteemed companies like Kabushiki Kaisha Toshiba and Toshiba Memory Corporation exemplify Nakamura's significant impact in this field. His work continues to inspire and shape the future of semiconductor memory devices, positioning him as a visionary in the industry.

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