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For the Inventor, By the Inventor

Kanagawa, Japan

Masatoshi Kumagai

This inventor holds 15 USPTO granted patents and 1 published patent application, primarily in Lighting Technology. Top assignees: Toshiba Lighting & Technology Corporation, Fujitsu Corporation, Kabushiki Kaisha Toshiba. Active years: 1995-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masatoshi Kumagai. Retrieved from https://idiyas.com/inventor/masatoshi-kumagai-eci55xex

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

Calculating rank
USPTO Granted Patents = 15 

% Patents Active = 26.7

Average Co-Inventor Count = 4.8

ph-index = 4

Forward Citations = 55(Granted Patents)


Location History:

  • Kawasaki, JP (1995 - 2009)
  • Kanagawa-ku, JP (2010)
  • Kanagawa, JP (2002 - 2015)
  • Kanagawa-Ken, JP (2011 - 2015)
  • Yokosuka, JP (2013 - 2015)

Company Filing History:

goldMedal12 out of 663 
 
Toshiba Lighting & Technology Corporation
 patents
silverMedal3 out of 39,378 
 
Fujitsu Corporation
 patents
bronzeMedal2 out of 53,286 
 
Kabushiki Kaisha Toshiba
 patents
where one patent can have more than one assignee

Years Active: 1995-2015

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Areas of Expertise:
Power Supply Device
Illumination Device
LED Lamp System
Lighting Circuit
Light-Emitting Apparatus
Lighting Apparatus
DC Power Source
Switching Power Supply
Communication System
P2P Traffic Router
Cell Switching Device
15 patents (USPTO):Explore Patents
1. 9167653 - Power supply device and luminaire (2015-10-20),
2. 9006974 - Switching power supply apparatus and luminaire (2015-04-14),
3. 8970127 - Lighting circuit and illumination device (2015-03-03),
4. 8952627 - Illuminating device and illuminating method (2015-02-10),
5. 8872198 - Luminaire and light-emitting apparatus with light-emitting device (2014-10-28),
6. 8823278 - DC power source unit and LED lamp system (2014-09-02),
7. 8770795 - Light-emitting device and lighting apparatus (2014-07-08),
8. 8593067 - Led lighting device and illumination apparatus (2013-11-26),
9. 8079736 - Lighting apparatus (2011-12-20),
10. 8047687 - Lighting apparatus (2011-11-01),
11. 8042973 - Lighting apparatus (2011-10-25),
12. 7722213 - Lighting apparatus (2010-05-25),
13. 7545743 - P2P traffic supporting router and P2P traffic information sharing system using the router (2009-06-09),
14. 6359889 - Cell switching device for controlling a fixed rate connection (2002-03-19),
15. 5459772 - External apparatus for monitoring a communication system (1995-10-17),

Title: Masatoshi Kumagai - Innovative Inventor from Kanagawa-ken, JP

Introduction: Masatoshi Kumagai is a renowned inventor hailing from Kanagawa-ken, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Masatoshi Kumagai holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his continuous dedication to pushing the boundaries of technological advancement.

Career Highlights: With a career spanning over two decades, Masatoshi Kumagai has worked with leading tech companies and research institutions, where he has spearheaded projects that have revolutionized industries and improved the quality of life for many.

Collaborations: Throughout his career, Masatoshi Kumagai has collaborated with top engineers, scientists, and researchers from around the world, fostering a culture of innovation and knowledge-sharing that has led to numerous successful projects and inventions.

Conclusion: Masatoshi Kumagai's passion for innovation, coupled with his relentless drive to solve complex challenges, has solidified his reputation as a visionary inventor in the global technology landscape.

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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