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For the Inventor, By the Inventor

Tokyo, Japan

Masayuki M Nakamura

This inventor holds 54 USPTO granted patents and 5 published patent applications, primarily in Semiconductor Technology (CPC class 4289). Top assignees: Dai Nippon Insatsu Kabushiki Kaisha, Hitachi, Ltd., Elpida Memory, Inc.. Active years: 1986-2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masayuki M Nakamura. Retrieved from https://idiyas.com/inventor/masayuki-m-nakamura

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 = 88.9

Average Co-Inventor Count = 2.9

ph-index = 16

Forward Citations = 764(Granted Patents)

Forward Citations (Not Self Cited) = 754(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Hyogo, JP (1986 - 1987)
  • Akishima, JP (1995 - 1999)
  • Nagoya, JP (1991 - 2005)
  • Saitama, JP (2011)
  • Tokyo, JP (1990 - 2021)

Company Filing History:

goldMedal17 out of 412 
 
Dai Nippon Insatsu Kabushiki Kaisha
 patents
silverMedal17 out of 42,731 
 
Hitachi, Ltd.
 patents
bronzeMedal8 out of 1,458 
 
Elpida Memory, Inc.
 patents
4. 5 out of 21,351 
 
Mitsubishi Denki Kabushiki Kaisha
 patents
5. 4 out of 217 
 
Hitachi Device Engineering Co., Ltd.
 patents
6. 3 out of 3,208 
 
Dai Nippon Printing Co., Ltd.
 patents
7. 2 out of 2,281 
 
Adv Antest Corporation
 patents
8. 2 out of 1,256 
 
Kawasaki Steel Corporation
 patents
9. 2 out of 1,379 
 
Mitsui Toatsu Chemicals, Incorporated
 patents
10. 2 out of 29,888 
 
Texas Instruments Corporation
 patents
11. 1 out of 718 
 
Dexerials Corporation
 patents
12. 1 out of 13 
 
Hitachi Chubu Software, Ltd.
 patents
13. 1 out of 336 
 
Hitachi Ulsi Systems Co., Ltd.
 patents
14. 1 out of 3,675 
 
Kao Corporation
 patents
15. 1 out of 177 
 
Mitsubishi Electric Engineering Company, Limited
 patents
16. 1 out of 377 
 
Ps4 Luxco S.a.r.l.
 patents
17. 1 out of 665 
 
Yoshino Kogyosho Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1986-2021

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Areas of Expertise:
Water Cleaning Agent
Semiconductor Storage Device
Liquid Sprayer
Memory Module
Duty Ratio Control
Calibration Circuit
Integrated Circuit
Dynamic RAM
Thermal Transfer Sheet
Error Correction Code
Data Sequencing
Welding Machine
54 patents (USPTO):Explore Patents
1. 10954142 - Water cleaning agent and water cleaning method (2021-03-23),
2. 9412432 - Semiconductor storage device and system provided with same (2016-08-09),
3. 8684235 - Trigger-type liquid sprayer (2014-04-01),
4. 8422263 - Load reduced memory module and memory system including the same (2013-04-16),
5. 8004332 - Duty ratio control apparatus and duty ratio control method (2011-08-23),
6. 7839159 - ZQ calibration circuit and a semiconductor device including a ZQ calibration circuit (2010-11-23),
7. 7796456 - Semiconductor device (2010-09-14),
8. 7772931 - Oscillator and a tuning method of a loop bandwidth of a phase-locked-loop (2010-08-10),
9. 7750726 - Reference voltage generating circuit (2010-07-06),
10. 7633833 - Semiconductor memory device (2009-12-15),
11. 7609572 - Semiconductor memory device (2009-10-27),
12. 7541862 - Reference voltage generating circuit (2009-06-02),
13. RE38944 - Semiconductor memory (2006-01-23),
14. 6915476 - Redundancy semiconductor memory device with error correction code (ECC) circuits for correcting errors in recovery fuse data (2005-07-05),
15. 6906971 - Semiconductor integrated circuit device (2005-06-14),

Title: The Innovative Work of Masayuki M Nakamura in Tokyo, Japan

Introduction: Masayuki M Nakamura, a renowned inventor based in Tokyo, Japan, has made significant contributions to the field of technology with his prolific innovations and numerous patents.

Latest Patents: Among his 54 patents, two of his latest inventions showcase his expertise in the realm of technology. The first patent pertains to a water cleaning agent and method that enhances water purification performance in automated wastewater purification systems. The second patent involves a semiconductor storage device and system that streamlines address conversion processes, making target row refresh operations more efficient.

Career Highlights: Masayuki M Nakamura has an impressive professional background, having worked at esteemed companies such as Hitachi, Ltd. and Dai Nippon Insatsu Kabushiki Kaisha. His innovative spirit and dedication to technological advancement have been evident throughout his career, leading to the development of groundbreaking inventions.

Collaborations: Throughout his career, Masayuki M Nakamura has collaborated with talented individuals in the industry, including coworkers like Jumpei J Kanto and Hiroshi H Eguchi. These collaborations have fostered a culture of innovation and creativity, resulting in the successful implementation of cutting-edge technologies.

Conclusion: Masayuki M Nakamura's contributions to the field of technology have been invaluable, with his patents and inventions making a profound impact on various industries. His inventive spirit and commitment to excellence continue to inspire future generations of innovators.

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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