Sakai, Japan

Junji Kawamoto

This inventor holds 3 USPTO granted patents. Top assignees: Daicel Corporation, Daicel Chemical Industries, Ltd.. Active years: 1978-1988.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Junji Kawamoto. Retrieved from https://idiyas.com/inventor/junji-kawamoto-g6xkpeu4

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 3.2

ph-index = 3

Forward Citations = 30(Granted Patents)


Location History:

  • Sakai, JA (1978)
  • Sakai, JP (1979 - 1988)

Company Filing History:


Years Active: 1978-1988

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3 patents (USPTO):Explore Patents

Title: Junji Kawamoto: Innovator in Tobacco Filter Technology

Introduction

Junji Kawamoto is a notable inventor based in Sakai, Japan. He has made significant contributions to the field of tobacco filter technology, holding a total of 3 patents. His innovative approaches have led to advancements in the design and functionality of cigarette filters.

Latest Patents

Kawamoto's latest patents include the development of narrow-cross sectioned fibers for use in tobacco smoker filters. These fibers are composed of cellulose acetate and feature a rectangular cross-section with a longer/shorter diameter ratio greater than 5.5. This design allows for the manufacture of filters with high filtering performance while maintaining a relatively small fiber filling rate. Another significant patent involves the preparation of cigarette filters by blooming a tow of cellulose acetate fibers. This process includes adding a plasticizer composed of levulinic acid esters, which enhances the quality of the cigarette filter rod.

Career Highlights

Throughout his career, Junji Kawamoto has worked with prominent companies such as Daicel Corporation and Daicel Chemical Industries, Ltd. His work has been instrumental in advancing the technology behind tobacco filters, making them more efficient and effective.

Collaborations

Kawamoto has collaborated with notable colleagues in his field, including Hideo Sawada and Makoto Shiga. These partnerships have contributed to the innovative developments in tobacco filter technology.

Conclusion

Junji Kawamoto's contributions to the field of tobacco filter technology are noteworthy. His patents reflect a commitment to innovation and improvement in product performance. His work continues to influence the industry and enhance the quality of tobacco products.

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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