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For the Inventor, By the Inventor

Hitachi, Japan

Masahisa Inagaki

This inventor holds 30 USPTO granted patents, plus 1 CIPO patent, primarily in Zirconium Alloy Development. Top assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd., Toshiba Corporation. Active years: 1982-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masahisa Inagaki. Retrieved from https://idiyas.com/inventor/masahisa-inagaki

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

USPTO Granted Patents = 30

% Patents Active = 80.0

 

Average Co-Inventor Count = 6.2

ph-index = 14

Forward Citations = 424(Granted Patents)


Company Filing History:

goldMedal30 out of 42,740 
 
Hitachi, Ltd.
 patents
silverMedal1 out of 162 
 
Hitachi Engineering Co., Ltd.
 patents
bronzeMedal1 out of 193 
 
Toshiba Corporation
 patents
where one patent can have more than one assignee

Years Active: 1982-2015

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Areas of Expertise:
Zirconium Alloy
Friction Stir Welding
Nuclear Reactor
Composite Material
Turbine Blade
High-Purity Metal
Corrosion Resistance
Monitoring System
Laser Beam Treatment
Motor-Driven Blower
Diffusion Bonding
Friction Stir-Spot Welding
30 patents (USPTO):Explore Patents
1. 8989339 - Zirconium alloy material (2015-03-24),
2. 7661575 - Friction stirring-welding method (2010-02-16),
3. 7635075 - Method of friction stir-spot welding and welding apparatus (2009-12-22),
4. 6909185 - Composite material including copper and cuprous oxide and application thereof (2005-06-21),
5. 6874672 - Apparatus and method for frictional stirring weld (2005-04-05),
6. 6843405 - Method of joining metallic materials (2005-01-18),
7. 6833617 - Composite material including copper and cuprous oxide and application thereof (2004-12-21),
8. 6814544 - Method for manufacturing turbine blade and manufactured turbine blade (2004-11-09),
9. 6729526 - Friction stir welding apparatus and method and processing apparatus and method (2004-05-04),
10. 6146094 - Motor-driven blower and method of manufacturing impeller for (2000-11-14),
11. 5872826 - Fuel assembly channel box having burnable poison (1999-02-16),
12. 5862194 - Zirconium based alloy of low irradiation growth, method of producing the (1999-01-19),
13. 5770333 - Nonaqueous secondary battery and negative electrode material therefor (1998-06-23),
14. 5640435 - Fuel assembly and nuclear reactor (1997-06-17),
15. 5617456 - Fuel assembly and nuclear reactor (1997-04-01),

Title: Masahisa Inagaki: Pioneering Inventor from Hitachi

Introduction: Masahisa Inagaki is a renowned inventor hailing from Hitachi, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Inagaki holds several patents in various technological domains, showcasing his continuous dedication to pushing the boundaries of innovation and creativity.

Career Highlights: Throughout his illustrious career, Inagaki has worked on numerous projects that have revolutionized the way we perceive technology. His innovative spirit and passion for invention have led to the development of cutting-edge solutions that have impacted industries worldwide.

Collaborations: Inagaki has collaborated with leading tech companies and research institutions, fostering a culture of innovation and knowledge-sharing. His collaborative efforts have resulted in the creation of transformative technologies that have shaped the modern technological landscape.

Conclusion: Masahisa Inagaki's relentless pursuit of innovation and his remarkable contributions to the world of technology make him a true pioneer in his field, inspiring future generations of inventors and 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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