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For the Inventor, By the Inventor

Tokyo, Japan

Hiroshi Nakagawa

This inventor holds 54 USPTO granted patents and 7 published patent applications and 17 EPO patents, primarily in Turbocharger Technology (CPC class 310 ). Top assignees: Shinko Electric Company, Ltd., Sinfonia Technology Co., Ltd., Elpida Memory, Inc.. Active years: 1978-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroshi Nakagawa. Retrieved from https://idiyas.com/inventor/hiroshi-nakagawa

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 = 64.8

 

Average Co-Inventor Count = 2.4

ph-index = 9

Forward Citations = 293(Granted Patents)

Forward Citations (Not Self Cited) = 277(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Yokosuka, JP (1994)
  • Kanagawa-ken, JP (2000)
  • Mie, JP (1986 - 2015)
  • Ise, JP (1987 - 2015)
  • Tokyo, JP (1978 - 2023)
  • Sagamihara, JP (2008 - 2024)

Company Filing History:

goldMedal21 out of 227 
 
Shinko Electric Company, Ltd.
 patents
silverMedal6 out of 131 
 
Sinfonia Technology Co., Ltd.
 patents
bronzeMedal5 out of 1,458 
 
Elpida Memory, Inc.
 patents
4. 5 out of 304 
 
Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
 patents
5. 5 out of 4,741 
 
Mitsubishi Heavy Industries Limited
 patents
6. 4 out of 4,935 
 
Ntt Docomo, Inc.
 patents
7. 2 out of 2,280 
 
Adv Antest Corporation
 patents
8. 2 out of 2,887 
 
Victor Company of Japan, Limited
 patents
9. 1 out of 42,726 
 
Hitachi, Ltd.
 patents
10. 1 out of 11 
 
Nichirei Corporation
 patents
11. 1 out of 2 
 
Nissan Engineering Ltd.
 patents
12. 1 out of 1,355 
 
The University of Tokyo
 patents

Years Active: 1978-2025

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Areas of Expertise:
Turbocharger
Variable Geometry
Vibration Damping
Linear Actuator
Semiconductor Device
Gasoline Engine
High-Speed Rotation
Information Processing
Wastegate Valve
Damping Apparatus
Data Backup
Rotary Fluid Element
54 patents (USPTO):Explore Patents
1. 12372005 - Variable geometry turbine and turbocharger with same (2025-07-29),
2. 12055091 - Turbine housing, turbocharger, and gasoline engine (2024-08-06),
3. 11808173 - Turbocharger turbine housing scroll passage (2023-11-07),
4. 11763441 - Information processing apparatus (2023-09-19),
5. 11580468 - Information processing apparatus (2023-02-14),
6. 11238387 - Management apparatus and management system (2022-02-01),
7. 11167846 - Information processing apparatus (2021-11-09),
8. 10520386 - Vibration measurement device and method for high-speed rotating machines (2019-12-31),
9. 10465713 - Rotary fluid element and method of correcting unbalance of rotary fluid element (2019-11-05),
10. 9882460 - Linear actuator (2018-01-30),
11. 9874100 - Turbine rotor and turbocharger having the turbine rotor (2018-01-23),
12. 9647524 - Linear actuator (2017-05-09),
13. 9464565 - Wastegate valve and exhaust gas turbocharger equipped with wastegate valve (2016-10-11),
14. 9442659 - Data backup storage system (2016-09-13),
15. 9071108 - Movable iron core linear actuator (2015-06-30),

Title: Hiroshi Nakagawa - Pioneering Inventor from Tokyo

Introduction: Hiroshi Nakagawa is a renowned inventor hailing from Tokyo, Japan, known for his groundbreaking contributions to the field of technology and innovation.

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

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

Collaborations: Throughout his career, Hiroshi Nakagawa has collaborated with top researchers, engineers, and scientists both in Japan and internationally, fostering a culture of innovation and knowledge-sharing.

Conclusion: Hiroshi Nakagawa'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.

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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