Tokyo, Japan

Hiroyuki Matsumoto

USPTO Granted Patents = 201 

 

Average Co-Inventor Count = 2.4

ph-index = 17

Forward Citations = 1,138(Granted Patents)

Forward Citations (Not Self Cited) = 1,064(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Atsugi, JP (1984 - 1986)
  • Tachikawa, JP (1989 - 1992)
  • Tama, JP (1994)
  • Omiya, JP (1997)
  • Itami, JP (1997)
  • Saitama-ken, JP (2005)
  • Saitama, JP (2000 - 2011)
  • Kita-ku, JP (2010 - 2011)
  • Tottori, JP (2012)
  • Kumagaya, JP (2013)
  • Hyogo, JP (2015 - 2017)
  • Niigata, JP (2017)
  • Setagaya, JP (2018)
  • Kodaira, JP (1997 - 2019)
  • Fukuoka, JP (2011 - 2023)
  • Osaka, JP (2013 - 2023)
  • Tokyo, JP (1984 - 2024)

Company Filing History:

goldMedal44 out of 7,954 
 
Tdk Corporation
 patents
silverMedal37 out of 13,262 
 
Panasonic Intellectual Property Management Co., Ltd.
 patents
bronzeMedal35 out of 5,119 
 
Bridgestone Corporation
 patents
428 out of 8,891 
 
Nikon Corporation
 patents
517 out of 775 
 
Nippon Kayaku Kabushiki Kaisha
 patents
67 out of 58,129 
 
Sony Corporation
 patents
75 out of 2,245 
 
Mitsubishi Gas Chemical Company, Inc.
 patents
83 out of 16,453 
 
Panasonic Corporation
 patents
93 out of 2,646 
 
Pioneer Corporation
 patents
102 out of 21,351 
 
Mitsubishi Denki Kabushiki Kaisha
 patents
112 out of 1,297 
 
Asahi Kasei Kogyo Kabushiki Kaisha
 patents
122 out of 3 
 
Tsukasa Kasei Kogyo Kabushiki Kaisha
 patents
132 out of 4,233 
 
Yamaha Hatsudoki Kabushiki Kaisha
 patents
142 out of 967 
 
Toyo Tire Rubber Co., Ltd.
 patents
152 out of 3,751 
 
Panasonic Intellectual Property Corporation of America
 patents
162 out of 5 
 
Tex E.g. Co., Ltd.
 patents
172 out of 6,652 
 
Kyocera Corporation
 patents
182 out of 3,430 
 
Sony Group Corporation
 patents
191 out of 86 
 
Mitsubishi Electric Semiconductor Software Co., Ltd
 patents
201 out of 1 
 
Nippon Kayaku Kabushiki
 patent
211 out of 17 
 
Japan Metal Gasket Co., Ltd.
 patents
221 out of 2,043 
 
Subaru Corporation
 patents
231 out of 553 
 
Nihon Kohden Corporation
 patents
241 out of 39 
 
Research Investment Network, Inc.
 patents
where one patent can have more than one assignee

Years Active: 1984-2025

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Areas of Expertise:
Pneumatic Tire
Soft Magnetic Alloy
Unmanned Aerial Vehicle
Imaging Lens
Non-Aqueous Electrolyte Battery
Magnetic Core
Metal Powder Production
Voice Monitoring System
Rechargeable Battery
Magnetic Component
Electronic Device
Tire Tread
201 patents (USPTO):Explore Patents

Title: Hiroyuki Matsumoto: A Tokyo-based Innovator Reinventing Soft Magnetic Metal Powder

Introduction:

Meet Hiroyuki Matsumoto, an innovative inventor hailing from Tokyo, Japan. With a remarkable career spanning several renowned companies, Matsumoto has contributed significantly to the field of soft magnetic metal powder. His relentless pursuit of novel solutions has led to the creation of patents that revolutionize magnetic components. Let's delve into Matsumoto's latest patents, career highlights, collaborations, and the impact he has made in his field.

Latest Patents:

Hiroyuki Matsumoto's recent patents focus on the development of soft magnetic metal powders, dust cores, and magnetic components. One of his notable inventions entails a soft magnetic metal powder consisting of Fe particles. The powder's surface is enveloped by a coating comprising two layers: a first layer composed primarily of Fe oxides and a second layer incorporating compounds of P, Si, Bi, or Zn. This unique configuration enhances the performance and characteristics of the soft magnetic metal powder.

Another noteworthy patent by Matsumoto encompasses a soft magnetic metal powder with remarkably low coercivity (Hcj) and high saturation magnetic flux density (Bs). Additionally, this powder possesses a high powder resistivity and excellent insulating properties. Each particle within this powder has a soft magnetic metal portion accompanied by a two-layered coating. The first coating layer, closer to the metal portion, comprises amorphous material, while the second coating layer closer to the surface consists of crystals. The second layer exhibits a higher crystal content ratio compared to the first layer, imparting improved performance to the powder.

Career Highlights:

Hiroyuki Matsumoto has left an indelible mark in the industry, working with prestigious companies such as Panasonic Intellectual Property Management Co., Ltd. and Nikon Corporation. These esteemed organizations have provided him with the platform to translate his ideas into impactful inventions. His collaborative and innovative approach has enabled him to gain recognition for his exceptional contributions to the field.

Collaborations:

Throughout his career, Matsumoto has collaborated with influential individuals who share his passion for innovation. Notably, he has worked closely with Kazuhiro Yoshidome and Kenji Horino, both highly esteemed professionals in the field. Together, they have fueled each other's creativity and pushed the boundaries of soft magnetic metal powder technology.

Conclusion:

Hiroyuki Matsumoto's contributions to the realm of soft magnetic metal powders and magnetic components have been nothing short of extraordinary. With over 161 patents to his name, Matsumoto continues to inspire and drive innovation in his field. Through his collaborations with industry-leading companies and colleagues, he has amplified his impact and established himself as a trailblazer within the technological landscape. Matsumoto's inventions provide valuable improvements to magnetic components, opening up new possibilities for industries reliant on these materials. Tokyo is indeed fortunate to be home to this visionary inventor.

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