Numazu, Japan

Koji Yamaguchi

USPTO Granted Patents = 122 

 

 

Average Co-Inventor Count = 3.0

ph-index = 28

Forward Citations = 2,311(Granted Patents)

Forward Citations (Not Self Cited) = 1,478(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Tokyo, JA (1978)
  • Itami, JP (1995)
  • Tiba, JP (1996)
  • Chiba-ken, JP (1997 - 1998)
  • Tiba-ken, JP (1998)
  • Hyogo, JP (1998)
  • Kanagawa-ken, JP (1999 - 2007)
  • Hitachinaka, JP (2010)
  • Ota-ku, JP (2009 - 2011)
  • Katori, JP (2011)
  • Yokohama, JP (1990 - 2013)
  • Namazu, JP (2013)
  • Nagoya, JP (2015 - 2016)
  • Saitama-shi, Saitama, JP (2017)
  • Shizuoka-ken, JP (2009 - 2021)
  • Kanagawa, JP (2020 - 2021)
  • Aichi, JP (2021 - 2022)
  • Okazaki, JP (2022 - 2023)
  • Tokyo, JP (1995 - 2024)
  • Numazu, JP (2002 - 2024)
  • Shizuoka, JP (2013 - 2024)

Company Filing History:

goldMedal64 out of 90,697 
 
Canon Kabushiki Kaisha
 patents
silverMedal9 out of 52,735 
 
Kabushiki Kaisha Toshiba
 patents
bronzeMedal8 out of 3,476 
 
Toray Industries, Inc.
 patents
47 out of 15,906 
 
Mitsubishi Electric Corporation
 patents
56 out of 82 
 
Origin Electric Company, Limited
 patents
65 out of 28,566 
 
Ricoh Company, Ltd.
 patents
75 out of 139 
 
Futaba Industrial Co., Ltd.
 patents
83 out of 264 
 
Sega Enterprises, Ltd.
 patents
93 out of 1,556 
 
Disco Corporation
 patents
103 out of 10,250 
 
Sumitomo Electric Industries, Limited
 patents
112 out of 42,496 
 
Hitachi, Ltd.
 patents
122 out of 129 
 
Tokyo Medical and Dental University
 patents
131 out of 199 
 
Namco Limited
 patents
141 out of 128 
 
International Superconductivity Technology Center
 patents
151 out of 12 
 
Hokuriku Electric Power Company
 patents
161 out of 3,328 
 
Kawasaki Jukogyo Kabushiki Kaisha
 patents
171 out of 3,557 
 
Nippon Steel Corporation
 patents
181 out of 1,432 
 
Ube Industries, Inc.
 patents
191 out of 3,623 
 
Airbus Operations Gmbh
 patents
201 out of 65 
 
Nemoto Kyorindo Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1978-2025

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Areas of Expertise:
Electric Machine Systems
Common Mode Filter Circuits
Image Forming Apparatus
Air-Conditioning Systems
Chemical Liquid Injectors
Laser Welding Apparatus
Nerve Stimulation Apparatus
Photosensitive Drums
Cartridge Technology
Magnetic Measuring Apparatus
Developer Containers
Rotatable Members
122 patents (USPTO):Explore Patents

Title: The Innovative Journey of Inventor Koji Yamaguchi

Introduction: Koji Yamaguchi, a visionary inventor hailing from Numazu, Japan, has made significant contributions to the world of technology and innovation through his groundbreaking inventions.

Latest Patents: Koji Yamaguchi's latest patents include a cutting-edge virtual reality device that revolutionizes the gaming industry, a sustainable energy solution that aims to combat climate change, and a medical device that enhances patient care.

Career Highlights: Throughout his illustrious career, Koji Yamaguchi has been recognized for his exceptional creativity and problem-solving skills. He has received multiple awards for his innovative inventions and has been granted numerous patents for his groundbreaking ideas.

Collaborations: Koji Yamaguchi has collaborated with leading technology companies, research institutions, and universities to further develop and implement his inventions. His collaborative spirit has led to the successful realization of cutting-edge technologies that have positively impacted various industries.

Conclusion: In conclusion, Koji Yamaguchi's passion for innovation and his relentless pursuit of excellence have established him as a prominent figure in the world of inventors. His remarkable contributions continue to inspire future generations of innovators to push the boundaries of what is possible.

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