Hirakata, Japan

Yasuji Narahara

This inventor holds 3 USPTO granted patents. Top assignee: Ube Industries, Inc.. Active years: 1989-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasuji Narahara. Retrieved from https://idiyas.com/inventor/yasuji-narahara

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 = 4.0

ph-index = 3

Forward Citations = 26(Granted Patents)


Company Filing History:


Years Active: 1989-1990

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3 patents (USPTO):Explore Patents

Title: Yasuji Narahara: Innovator in Aromatic Polyimide Technology

Introduction

Yasuji Narahara is a notable inventor based in Hirakata, Japan. He has made significant contributions to the field of polymer technology, particularly in the development of aromatic polyimide films and articles. With a total of 3 patents to his name, Narahara's work has advanced the understanding and application of these materials in various industries.

Latest Patents

Narahara's latest patents include a process for the preparation of aromatic polyimide film. This innovative process involves creating a film with extremely small-sized protrusions, enhancing its surface properties. The method includes coating an aromatic polyamic acid solution containing inorganic particles on an aromatic polyimide gel film, followed by drying and heat treatment. Another significant patent is for producing a shaped and drawn aromatic imide polymer article. This process allows for the creation of films or filaments with specific tensile strength and elongation properties, achieved through simultaneous shaping and imidization of the aromatic polyamic acid.

Career Highlights

Yasuji Narahara is currently associated with Ube Industries, Inc., where he continues to push the boundaries of polymer innovation. His work has not only contributed to the company's portfolio but has also positioned him as a key figure in the field of polymer science.

Collaborations

Throughout his career, Narahara has collaborated with esteemed colleagues such as Hiroshi Inoue and Tadao Muramatsu. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Yasuji Narahara's contributions to the field of aromatic polyimide technology are noteworthy. His patents reflect a deep understanding of polymer science and a commitment to advancing material applications. His work continues to influence the industry and inspire future innovations.

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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