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For the Inventor, By the Inventor

Yokohama, Japan

Hiroyuki Nagashima

This inventor holds 109 USPTO granted patents and 7 EPO patents, primarily in Nonvolatile Memory Devices (CPC class G11C16-26). Top assignees: Ricoh Company, Ltd., Kabushiki Kaisha Toshiba, Toshiba Memory Corporation. Active years: 1994-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroyuki Nagashima. Retrieved from https://idiyas.com/inventor/hiroyuki-nagashima

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

USPTO Granted Patents = 109

% Patents Active = 67.0


Average Co-Inventor Count = 2.3

ph-index = 16

Forward Citations = 856(Granted Patents)

Forward Citations (Not Self Cited) = 745(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • Kanagawa-ken, JP (2006 - 2008)
  • Kanagwa, JP (2009 - 2010)
  • Kanagawa, JP (2005 - 2017)
  • Yokohama, JP (1994 - 2024)
  • Tokyo, JP (2006 - 2024)

Company Filing History:

goldMedal49 out of 28,934 
 
Ricoh Company, Ltd.
 patents
silverMedal48 out of 53,250 
 
Kabushiki Kaisha Toshiba
 patents
bronzeMedal7 out of 2,955 
 
Toshiba Memory Corporation
 patents
4. 3 out of 3,176 
 
Kioxia Corporation
 patents
5. 2 out of 379 
 
Hisamitsu Pharmaceutical Company, Inc.
 patents

Years Active: 1994-2026

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Areas of Expertise:
Nonvolatile Memory
Memory System
Semiconductor Device
Memory Chip
Read Voltage
Memory Cell
Memory Array
Three Dimensional Stacking
Noise Reduction
Cleaning Mechanism
Lubricant Applicator
Spray Container
109 patents (USPTO):Explore Patents
1. 12738324 - Memory system performing read operation using read voltage (2026-09-15),
2. 11984167 - Memory system performing read operation with read voltage (2024-05-14),
3. D1014284 - Spray container (2024-02-13),
4. 11475962 - Memory system performing read operation with read voltage (2022-10-18),
5. 11100985 - Nonvolatile semiconductor memory device (2021-08-24),
6. 10916312 - Memory system performing read of nonvolatile semiconductor memory device (2021-02-09),
7. D888570 - Spray container (2020-06-30),
8. 10373692 - Memory system performing read of nonvolatile semiconductor memory device (2019-08-06),
9. 10242735 - Nonvolatile semiconductor memory device (2019-03-26),
10. 10020063 - Memory system performing read of nonvolatile semiconductor memory device (2018-07-10),
11. 9812195 - Nonvolatile semiconductor memory device (2017-11-07),
12. 9767913 - Memory system performing read of nonvolatile semiconductor memory device (2017-09-19),
13. 9685236 - Memory chip, memory device, and reading method (2017-06-20),
14. 9665426 - Semiconductor device and reading method (2017-05-30),
15. 9543027 - Memory chip, memory device, and reading method (2017-01-10),

Title: The Innovative Journey of Hiroyuki Nagashima

Introduction: Hiroyuki Nagashima, a pioneering inventor hailing from Yokohama, Japan, has made significant contributions to the world of technology through his groundbreaking innovations.

Latest Patents: Hiroyuki Nagashima holds several patents in the field of robotics and artificial intelligence, with his most recent inventions focusing on advanced human-robot interactions and autonomous systems.

Career Highlights: Throughout his illustrious career, Nagashima has worked with top research institutions and leading tech companies to develop cutting-edge technologies that have revolutionized various industries. His expertise in robotics has led to the creation of robots that enhance productivity and efficiency in manufacturing processes.

Collaborations: Nagashima has collaborated with renowned universities and multinational corporations to further his research and bring his inventions to life. His partnerships have resulted in the successful implementation of his innovative ideas in real-world applications.

Conclusion: Hiroyuki Nagashima's relentless pursuit of innovation and his passion for pushing the boundaries of technology have solidified his reputation as a visionary inventor in the field of robotics. His contributions continue to inspire future generations of inventors and shape the future of technological advancements.

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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