Kanagawa, Japan

Koji Takahashi

This inventor holds 203 USPTO granted patents and 12 published patent applications and 10 EPO patents, primarily in Electrophotographic Technology (CPC class 358906). Top assignees: Canon Kabushiki Kaisha, Fuji Photo Film Company, Limited, Toshiba Lighting & Technology Corporation. Active years: 1978-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koji Takahashi. Retrieved from https://idiyas.com/inventor/koji-takahashi

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

USPTO Granted Patents = 203 

% Patents Active = 86.2

 

Average Co-Inventor Count = 2.6

ph-index = 28

Forward Citations = 3,335(Granted Patents)

Forward Citations (Not Self Cited) = 3,178(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Hadano, JP (1987)
  • Toride, JP (1999)
  • Minamiashigara, JP (1978 - 2004)
  • Matsuyama, JP (2009)
  • Suntou-gun, JP (2013 - 2014)
  • Kanagawa-ken, JP (1996 - 2015)
  • Yokosuka, JP (2004 - 2015)
  • Kanagawa, JP (1986 - 2017)
  • Nagasaki, JP (2019)
  • Chigasaki, JP (1996 - 2020)
  • Kashiwa, JP (2015 - 2021)

Company Filing History:


Years Active: 1978-2026

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Areas of Expertise:
Electrophotographic Member
Process Cartridge
Imaging Module
Thin Substrate
Solid-State Imaging
Power Supply Device
Drive Assist Display
Magnetic Disk Controller
Surface Processing
Charge Transport Layer
Image Processing
203 patents (USPTO):Explore Patents

Title: Koji Takahashi: Pioneering Innovator in Electrophotographic Technology

Introduction:

Koji Takahashi, a highly accomplished inventor based in Kanagawa, Japan, has been making significant contributions to the field of electrophotographic technology. With an impressive portfolio of 172 patents, Takahashi has dedicated his career to pushing the boundaries of innovation in this specialized area. This article will delve into his latest patents, highlight his remarkable career accomplishments, explore his collaborations with notable individuals, and ultimately recognize his invaluable contributions to the field.

Latest Patents:

Takahashi's recent patents showcase his expertise in refining electrophotographic photosensitive members. In one of his latest inventions, he developed an electrophotographic photosensitive member that comprises a support, charge-generating layer, and charge-transporting layer. The surface layer of this member contains inorganic particles and resin particles in specific proportions, resulting in enhanced performance. This innovation aims to improve the efficiency and reliability of electrophotographic apparatus.

In another patent, Takahashi introduced an electrophotographic photosensitive member with a surface layer containing a copolymer composition. The incorporation of specific compounds in the composition enhances the photosensitive member's durability and performance. This invention provides a technological advancement in the field of electrophotographic photosensitive members, contributing to the development of more efficient and long-lasting electrophotographic apparatus.

Career Highlights:

Throughout his career, Takahashi has made significant contributions to the electrophotographic technology sector. He has held key positions in renowned companies, such as Canon Inc. and Fuji Photo Film Company, Limited. Takahashi's innovative mindset and deep understanding of the complex nature of electrophotographic technology have led to groundbreaking advancements. His inventions have been instrumental in improving the efficiency, reliability, and overall performance of electrophotographic apparatus.

Collaborations:

Takahashi's collaborations with accomplished individuals have further enriched his professional journey. Notably, he has worked with Katsuji Yoshimura and Kenichi Nagasawa, both respected experts in the field. These collaborations have fostered an exchange of ideas and expertise, leading to synergistic advancements in electrophotographic technology.

Conclusion:

Koji Takahashi's remarkable contributions to the field of electrophotographic technology have solidified his status as a pioneering innovator. With a robust portfolio of 172 patents, including his latest inventions in electrophotographic photosensitive members, Takahashi has reshaped the landscape of this specialized domain. His collaborations with esteemed colleagues and his positions in esteemed companies further demonstrate his invaluable expertise and dedication to advancing the field. As a visionary inventor, Takahashi continues to pave the way for future breakthroughs, ensuring that electrophotographic technology remains at the forefront of innovation.

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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