Tokyo, Japan

Katsuji Muramatsu

This inventor holds 17 USPTO granted patents. Top assignee: Fuji Photo Film Company, Limited. Active years: 1977-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsuji Muramatsu. Retrieved from https://idiyas.com/inventor/katsuji-muramatsu

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


% Patents Active = 100.0

Average Co-Inventor Count = 2.3

ph-index = 8

Forward Citations = 307(Granted Patents)


Location History:

  • Tokyo, JA (1977 - 1978)
  • Machida, JA (1978)
  • Saitama, JP (1994)
  • Kanagawa, JP (1996 - 2000)
  • Tokyo, JP (1981 - 2001)

Company Filing History:


Years Active: 1977-2001

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17 patents (USPTO):Explore Patents

Title: Katsuji Muramatsu: Innovator in Photographic Technology

Introduction

Katsuji Muramatsu is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of photographic technology, holding a total of 17 patents. His innovative designs have advanced the functionality and usability of photographic film units.

Latest Patents

Among his latest patents is the lens-fitted photographic film unit and the method of manufacturing the same. This invention features a film unit that is preloaded with photographic film and includes an eight-toothed driven sprocket wheel that meshes with perforations on the film. The design allows for precise feeding of the photographic film, ensuring that the shutter mechanism is cocked in response to the rotation of the sprocket. This mechanism enhances the efficiency of film loading while maintaining the integrity of the shutter mechanism. Another notable patent is the lens-fitted photographic film unit with a picture frame size changing mechanism. This mechanism allows users to switch between full-size and panoramic picture frames, providing versatility in photography.

Career Highlights

Katsuji Muramatsu is associated with Fuji Photo Film Company, Limited, where he has played a crucial role in developing innovative photographic solutions. His work has not only improved existing technologies but has also paved the way for new advancements in the industry.

Collaborations

Throughout his career, Muramatsu has collaborated with notable coworkers such as Yoshihiro Fujita and Ikuo Fuutagawa. These collaborations have contributed to the successful development of various photographic technologies.

Conclusion

Katsuji Muramatsu's contributions to photographic technology through his patents and collaborations have significantly impacted the industry. His innovative spirit continues to inspire advancements in photography.

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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