Tokyo, Japan

Hiroyuki Ishii

USPTO Granted Patents = 287 

 

Average Co-Inventor Count = 2.5

ph-index = 17

Forward Citations = 1,139(Granted Patents)

Forward Citations (Not Self Cited) = 1,100(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Zama, JP (1994)
  • Mie, JP (2002 - 2009)
  • Yokosuka-shi, JP (2010)
  • Hyogo, JP (1996 - 2012)
  • Kanagawa-ken, JP (2012)
  • Yokosuka, JP (2006 - 2015)
  • Kanagawa, JP (2014 - 2015)
  • Oyama, JP (2015)
  • Mountain View, CA (US) (2015)
  • Atsugi, JP (2011 - 2019)
  • Palo Alto, CA (US) (2016 - 2020)
  • Toshima-ku, JP (2020)
  • Kawasaki, JP (2012 - 2022)
  • Yokohama, JP (2007 - 2023)
  • Musashino, JP (2022 - 2023)
  • Tokyo, JP (1978 - 2024)

Company Filing History:

goldMedal186 out of 4,705 
 
Ntt Docomo, Inc.
 patents
silverMedal50 out of 15,863 
 
Mitsubishi Electric Corporation
 patents
bronzeMedal15 out of 1,058 
 
Jsr Corporation
 patents
48 out of 5,290 
 
Nippon Telegraph and Telephone Corporation
 patents
57 out of 39,230 
 
Fujitsu Corporation
 patents
65 out of 35,670 
 
Nec Corporation
 patents
73 out of 228 
 
Sugatsune Kogyo Co., Ltd.
 patents
83 out of 42 
 
Sugatsune Industrial Co., Ltd.
 patents
92 out of 21,351 
 
Mitsubishi Denki Kabushiki Kaisha
 patents
102 out of 52,722 
 
Kabushiki Kaisha Toshiba
 patents
111 out of 10,240 
 
Sumitomo Electric Industries, Limited
 patents
121 out of 502 
 
Thk Co., Ltd.
 patents
131 out of 822 
 
Ushio Denki Kabushiki Kaisha
 patents
141 out of 1 
 
Mitsubishi Elextric Corporation
 patent
151 out of 25 
 
Teijin Frontier Co., Ltd.
 patents
161 out of 85 
 
Mahle Filter Systems Japan Corporation
 patents
171 out of 3,192 
 
Dai Nippon Printing Co., Ltd.
 patents
181 out of 2,632 
 
The Furukawa Electric Co., Ltd.
 patents
191 out of 984 
 
Tohoku University
 patents
where one patent can have more than one assignee

Years Active: 1978-2025

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Areas of Expertise:
Electric Motors
Air Conditioning
Semiconductor Devices
Optical Modules
Radio Communication
Permanent-Magnet Motors
Synchronous Motors
Communication Systems
Optical Integrated Devices
Control Boards
Mobile Communication
Manufacturing Methods
287 patents (USPTO):Explore Patents

Title: Hiroyuki Ishii: A Tokyo-Based Innovator with 281 Patents

Introduction:

Hiroyuki Ishii, a prolific inventor based in Tokyo, Japan, has made significant contributions to the field of electrical engineering. With an impressive portfolio of 281 patents, Ishii's innovative ideas have transformed the way we think about electric motors and communication technologies. This article delves into his latest patents, career highlights, collaborations, and his remarkable contributions to the industry.

Latest Patents:

Among Hiroyuki Ishii's latest patents is an invention related to electric motors and air-conditioning apparatus. This patent introduces a unique configuration where a magnetic sensor is positioned alongside a sensor magnet unit within an electric motor. This design feature optimizes the measurement of applied magnetic flux, enhancing the motor's performance and reliability.

Another recent patent by Ishii focuses on mobile communication technologies. It introduces a measurement unit within a mobile station that evaluates the radio quality of different carriers during communication. This invention enables the mobile station to transmit comprehensive measurement results to the radio base station, facilitating better network management and optimization.

Career Highlights:

Throughout his career, Hiroyuki Ishii has worked at notable companies in the industry, including NTT Docomo, Inc. and Mitsubishi Electric Corporation. These esteemed firms have provided him with a platform to realize his inventive ideas and put them into practice. With a total of 281 patents to his name, Ishii has undoubtedly demonstrated his expertise and dedication to innovation in the field of electrical engineering.

Collaborations:

During his professional journey, Hiroyuki Ishii has collaborated with esteemed colleagues, including Mineo Yamamoto and Hiroki Aso. Their collective efforts have amplified their innovative impact and led to ground-breaking discoveries. Collaborations often foster a fruitful exchange of ideas and expertise, enabling inventors like Ishii to push the boundaries of conventional thinking and create transformative solutions.

Conclusion:

Hiroyuki Ishii stands as a remarkable innovator with a passion for advancing electrical engineering. His 281 patents attest to his brilliance and dedication to research and development in the field. Through his inventive contributions, particularly in electric motors and mobile communication technologies, Ishii has revolutionized various industries. His partnership with renowned organizations and collaborations with accomplished colleagues further reinforce his status as an influential figure in the world of innovations. Hiroyuki Ishii's work continues to inspire and shape the future of electrical engineering, leaving a lasting legacy in the realm of technological advancements.

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