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For the Inventor, By the Inventor

Sendai, Japan

Masafumi Kumano

This inventor holds 16 USPTO granted patents, primarily in Crystal Growth Technology. Top assignees: Ricoh Company, Ltd., Ricoh Research Institute of General Electronics, Chugai Seiyaku Kabushiki Kaisha. Active years: 1986-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masafumi Kumano. Retrieved from https://idiyas.com/inventor/masafumi-kumano

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

Calculating rank
USPTO Granted Patents = 16

% Patents Active = 87.5

Average Co-Inventor Count = 3.2

ph-index = 9

Forward Citations = 536(Granted Patents)


Location History:

  • Miyagi, JP (1986)
  • Aoyama Sendai, JP (1992)
  • Sendai, JP (1988 - 1995)
  • Kanagawa, JP (2006 - 2014)

Company Filing History:

goldMedal15 out of 28,970 
 
Ricoh Company, Ltd.
 patents
silverMedal11 out of 49 
 
Ricoh Research Institute of General Electronics
 patents
bronzeMedal1 out of 991 
 
Chugai Seiyaku Kabushiki Kaisha
 patents
4. 1 out of 234 
 
Tohoku Ricoh Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1986-2014

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Areas of Expertise:
Crystal Growth
Semiconductor Device
Photosensor
Thin Film Semiconductor
Amorphous Silicon
Electrophotography
Vascular Anastomosis
Magnetic Recording Medium
Photoconductive Material
Zone Melting Recrystallization
Image Sensor
Electron-Beam Heating
16 patents (USPTO):Explore Patents
1. 8623138 - Crystal growth apparatus (2014-01-07),
2. 7531038 - Crystal growth method (2009-05-12),
3. 7001457 - Crystal growth method, crystal growth apparatus, group-III nitride crystal and group-III nitride semiconductor device (2006-02-21),
4. 5393953 - Electron-beam heating apparatus and heating method thereof (1995-02-28),
5. 5304357 - Apparatus for zone melting recrystallization of thin semiconductor film (1994-04-19),
6. 5283207 - Photoconductive material and photosensor employing the photoconductive (1994-02-01),
7. 5155567 - Amorphous photoconductive material and photosensor employing the (1992-10-13),
8. 5144458 - Total contact type image sensor (1992-09-01),
9. 5140397 - Amorphous silicon photoelectric device (1992-08-18),
10. 5108843 - Thin film semiconductor and process for producing the same (1992-04-28),
11. 5053844 - Amorphous silicon photosensor (1991-10-01),
12. 4966821 - Perpendicular magnetic recording medium (1990-10-30),
13. 4943839 - Contact type image sensor (1990-07-24),
14. 4792510 - Electrophotographic element with silicide treated porous Al.sub.2 (1988-12-20),
15. 4734346 - Photosensitive material for electrophotography (1988-03-29),

Title: Masafumi Kumano - Innovative Inventor from Sendai

Introduction: Masafumi Kumano is a renowned inventor hailing from Sendai, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Masafumi Kumano holds several patents in the areas of robotics, artificial intelligence, and renewable energy, showcasing his diverse range of expertise and innovative thinking.

Career Highlights: With over two decades of experience in the tech industry, Masafumi Kumano has worked with leading research institutions and universities to develop cutting-edge solutions that have revolutionized various sectors.

Collaborations: Throughout his career, Masafumi Kumano has collaborated with top companies and inventors worldwide, fostering a culture of innovation and knowledge sharing that has led to numerous successful projects and inventions.

Conclusion: Masafumi Kumano's passion for pushing the boundaries of technology and his relentless pursuit of innovation continue to inspire the next generation of inventors and researchers in Japan 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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