Masahiko Arai

This inventor holds 21 USPTO granted patents and 11 published patent applications, plus 4 CIPO patents and 7 EPO patents. Top assignees: Hitachi, Ltd., Mitsubishi Hitachi Power Systems, Ltd., Fujikura Limited. Active years: 1990-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masahiko Arai. Retrieved from https://idiyas.com/inventor/masahiko-arai

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

USPTO Granted Patents = 21 (Patent Applications = 11)

% Patents Active = 52.4

CIPO Patents = 4

EPO Patents = 7 (Patent Applications = 13)

Average Co-Inventor Count = 3.8

ph-index = 5

Forward Citations = 78(Granted Patents)

Location History:

Kodaira, JP (1990)
Hitachi, JP (1998 - 2003)
Tokyo, JP (2003)
Misato, JP (2015)
Hitachinaka, JP (2009 - 2018)
Yokohama, JP (2017 - 2019)

Company Filing History:

Mitsubishi Hitachi Power Systems, Ltd.

Nippon Chemiphar Co., Ltd.

patents

5. 1 out of 834,453

Other

patents

Years Active: 1990-2019

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21 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10378366 - Steam turbine rotor blade and method for manufacturing steam turbine rotor blade (2019-08-13),

2. 9873930 - Precipitation hardening martensitic stainless steel and steam turbine component made thereof (2018-01-23),

3. 9784110 - Steam turbine rotor (2017-10-10),

4. 9388702 - Precipitation hardening martensitic stainless steel, and steam turbine long blade, steam turbine, and power plant using the same (2016-07-12),

5. 9200524 - Steam turbine rotor (2015-12-01),

6. 9062362 - Precipitate hardening stainless steel and long blade using same for steam turbine (2015-06-23),

7. 8962613 - [object Object] (2015-02-24),

8. 8747733 - Precipitation hardenable martensitic stainless steel and steam turbine blade using the same (2014-06-10),

9. 8596982 - Turbine rotor (2013-12-03),

10. 8485788 - Rotor for steam turbine and method of manufacturing the same (2013-07-16),

11. 8225672 - Method for assessing remaining lifespan of bolt used at high temperatures (2012-07-24),

12. 8025746 - Turbine casing (2011-09-27),

13. 7632066 - Pipe for steam turbine, manufacturing process of same, main stream pipe and reheat pipe for steam turbine, and steam turbine power plant using those pipes (2009-12-15),

14. 7540711 - Heat resisting steel, steam turbine rotor shaft using the steel, steam turbine, and steam turbine power plant (2009-06-02),

15. 6664479 - Flexible printed circuit board (2003-12-16),

Title: Masahiko Arai - Innovative Inventor from Hitachinaka

Introduction: Masahiko Arai is a renowned inventor hailing from Hitachinaka, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Masahiko Arai 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, Masahiko Arai has worked with leading research institutions and technology companies, consistently pushing the boundaries of what is possible in the realm of innovation.

Collaborations: Throughout his career, Masahiko Arai has collaborated with top engineers, scientists, and inventors from around the world, fostering a culture of creativity and excellence in all his projects.

Conclusion: Masahiko Arai's passion for innovation and his relentless pursuit of technological advancement continue to inspire the next generation of inventors and shape the future of technology.

Profile summary based on public USPTO records.