Yokohama, Japan

Shinji Kojima

This inventor holds 11 USPTO granted patents. Top assignees: Nippon Petrochemicals Company, Limited, Nippon Petrochemicals, Resene Products Company. Active years: 1986-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shinji Kojima. Retrieved from https://idiyas.com/inventor/shinji-kojima-a9jt2x6b

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 = 3.9

ph-index = 7

Forward Citations = 128(Granted Patents)


Location History:

  • Kanagawa, JP (1989)
  • Yokohama, JP (1986 - 1991)

Company Filing History:


Years Active: 1986-1991

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11 patents (USPTO):Explore Patents

Title: **Shinji Kojima: Innovator in Ethylene Polymerization**

Introduction

Shinji Kojima, an accomplished inventor based in Yokohama, Japan, holds a significant portfolio of 11 patents. His innovative work primarily focuses on the field of ethylene copolymers, contributing to advancements in material science and polymerization techniques.

Latest Patents

Among his latest contributions, Kojima has developed a groundbreaking **method for producing ethylene copolymer**. This technique emphasizes the use of ethylene combined with at least one comonomer of unsaturated glycidyl monomer, all while avoiding undesirable thermal polymerization. By utilizing at least two polymerization inhibitors—one of which is specifically tailored for lubricating oils—Kojima's method ensures stable operation over extended periods, enhancing the production process.

Another notable invention is his **method for improving impulse destructive strength of electrical insulating materials**. This innovative approach uses a specific type of ethylene copolymer, achieved through high-pressure radical polymerization. This polymer composition incorporates one- to three-ring aromatic compounds, enhancing its resilience and performance under demanding conditions.

Career Highlights

Shinji Kojima's career includes pivotal roles in notable organizations, such as Nippon Petrochemicals Company, Limited and Nippon Petrochemicals. His expertise in polymerization and material science has made a significant impact on the industry, shaping advancements in how ethylene copolymers are produced and utilized.

Collaborations

Throughout his career, Kojima has worked alongside distinguished colleagues, including Yuichi Orikasa and Kaoru Yamamoto. These collaborations have not only enriched his research but also contributed to the shaping of innovative methodologies within the field.

Conclusion

Shinji Kojima exemplifies the spirit of innovation through his significant contributions to the field of polymer science. With a focus on enhancing the stability and performance of ethylene copolymers, his inventions continue to influence various applications in industries seeking advanced material solutions.

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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