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For the Inventor, By the Inventor

Tokyo, Japan

Keigo Shirafuji

This inventor holds 68 USPTO granted patents and 4 published patent applications and 47 EPO patents, primarily in Fluid Control Valves (CPC class F04B). Top assignees: Eagle Industry Co., Ltd., Kabushiki Kaisha Toyota Jidoshokki, Sanden Corporation. Active years: 2006-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keigo Shirafuji. Retrieved from https://idiyas.com/inventor/keigo-shirafuji

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

USPTO Granted Patents = 68 

% Patents Active = 100.0

 

Average Co-Inventor Count = 4.8

ph-index = 9

Forward Citations = 309(Granted Patents)

Forward Citations (Not Self Cited) = 60(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Takahashi, JP (2006)
  • Tokyo, JP (2009 - 2024)

Company Filing History:

goldMedal68 out of 543 
 
Eagle Industry Co., Ltd.
 patents
silverMedal3 out of 1,902 
 
Kabushiki Kaisha Toyota Jidoshokki
 patents
bronzeMedal2 out of 1,041 
 
Sanden Corporation
 patents
4. 1 out of 1,562 
 
Mahle International Gmbh
 patents
where one patent can have more than one assignee

Years Active: 2006-2025

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Areas of Expertise:
Fluid Control Valve
Expansion Valve
Capacity Control Valve
Electromagnetic Valve
Flow Rate Control
Valve Technology
Pressure Regulation
Fluid Dynamics
Control Mechanisms
Hydraulic Systems
Pneumatic Valves
Actuation Methods
68 patents (USPTO):Explore Patents
1. 12398822 - Valve (2025-08-26),
2. 12298048 - Expansion valve (2025-05-13),
3. 12297913 - Fluid control valve (2025-05-13),
4. 12292130 - Capacity control valve (2025-05-06),
5. 12270476 - Capacity control valve (2025-04-08),
6. 12264748 - Capacity control valve (2025-04-01),
7. 12264744 - Valve (2025-04-01),
8. 12264743 - Fluid control valve (2025-04-01),
9. 12196464 - Valve (2025-01-14),
10. 12180950 - Capacity control valve (2024-12-31),
11. 12146574 - Flow rate control valve (2024-11-19),
12. 12140243 - Capacity control valve (2024-11-12),
13. 12129840 - Capacity control valve (2024-10-29),
14. 12110882 - Capacity control valve (2024-10-08),
15. 12072035 - Capacity control valve (2024-08-27),

Title: Keigo Shirafuji - Innovative Inventor from Tokyo

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

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

Career Highlights: With a career spanning over two decades, Shirafuji has worked with leading tech companies in Japan, spearheading research and development projects that have led to the creation of cutting-edge products and solutions.

Collaborations: Throughout his career, Keigo Shirafuji has collaborated with top researchers, engineers, and scientists both locally and internationally, fostering a culture of innovation and knowledge sharing in the industry.

Conclusion: Keigo Shirafuji's passion for innovation and his relentless drive to push the boundaries of technology have solidified his reputation as a visionary inventor in Tokyo and beyond.

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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