Kawasaki, Japan

Kazuharu Imafuji

This inventor holds 51 USPTO granted patents and 18 published patent applications and 3 EPO patents, primarily in Camera Technology (CPC class G03B). Top assignee: Nikon Corporation. Active years: 1994-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuharu Imafuji. Retrieved from https://idiyas.com/inventor/kazuharu-imafuji

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

USPTO Granted Patents = 51 

% Patents Active = 72.5

 

Average Co-Inventor Count = 2.3

ph-index = 11

Forward Citations = 386(Granted Patents)

Forward Citations (Not Self Cited) = 333(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Yokohama, JP (1994)
  • Kanagawa, JP (1996)
  • Kanagawa-ken, JP (1997 - 1998)
  • Tokyo, JP (1994 - 2014)
  • Kawasaki-shi, JP (2016)
  • Kawasaki, JP (1995 - 2024)

Company Filing History:


Years Active: 1994-2024

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Areas of Expertise:
Interchangeable Lens
Camera Body
Electronic Device
Camera Accessory
Camera System
Exchangeable Lens
Electronic Flash Device
Motion Compensation Device
Visual Line Position Detection
51 patents (USPTO):Explore Patents

Title: Innovations by Kazuharu Imafuji: Pioneering Lens Technology

Introduction: Kazuharu Imafuji, a distinguished inventor based in Kawasaki, Japan, has made significant contributions to the field of photography through his innovative designs and patents. With a remarkable portfolio of 51 patents, Imafuji is recognized for his groundbreaking work, particularly in the area of interchangeable lenses and camera bodies.

Latest Patents: Among his latest innovations, Imafuji has designed an exchangeable lens that features a sophisticated mount unit, enabling it to be detachably engaged with a camera body. This invention includes a plurality of drive target members with changing conditions in response to applied drive forces. Furthermore, it encompasses an initialization unit that executes processing for each drive target member and a transmission system that communicates initialization statuses and drive conditions to the camera body through distinct transmission paths.

Another notable invention by Imafuji is a unique accessory designed for camera bodies, which integrates power terminals for supplying drive power, along with a group of communication terminals. These terminals facilitate both first and second data communications with the camera body independently, optimizing the functionality and performance of the photographic equipment.

Career Highlights: Kazuharu Imafuji’s passion for innovation in photography has been a driving force throughout his career. His tenure at Nikon Corporation has allowed him to lead projects that push the boundaries of technology within the camera industry. His inventions not only enhance user experience but also contribute to the technical evolution of photographic devices.

Collaborations: Imafuji has collaborated with notable colleagues such as Masafumi Oikawa and Shigeo Takahashi. These partnerships have fostered a collaborative environment that amplifies creativity and results in cutting-edge advancements within the field of imaging technology.

Conclusion: Kazuharu Imafuji stands out as a prominent figure in the realm of photography and lens technology. With 51 patents to his name, his continued work at Nikon Corporation exemplifies his dedication to innovation and the advancement of photographic equipment. His contributions will undoubtedly influence future developments in the industry, inspiring new generations of inventors.

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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