Otsu, Japan

Takao Oshima

This inventor holds 5 USPTO granted patents. Top assignees: Sumitomo Chemical Company, Limited, Tohto Kasei Co., Ltd.. Active years: 1978-1984.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takao Oshima. Retrieved from https://idiyas.com/inventor/takao-oshima-t3mmujc1

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 = 2.5

ph-index = 4

Forward Citations = 91(Granted Patents)


Location History:

  • Toyonaka, JA (1978)
  • Sonehigashi, JP (1979)
  • Takatsuki, JP (1981)
  • Otsu, JP (1983 - 1984)

Company Filing History:


Years Active: 1978-1984

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5 patents (USPTO):Explore Patents

Title: Takao Oshima: Innovator in Modified Epoxy Resin Compositions

Introduction

Takao Oshima is a notable inventor based in Otsu, Japan. He has made significant contributions to the field of materials science, particularly in the development of modified epoxy resin compositions. With a total of 5 patents to his name, Oshima's work has had a considerable impact on the industry.

Latest Patents

Oshima's latest patents focus on modified epoxy resin compositions that exhibit excellent flexibility and compatibility with conventional epoxy resins. These compositions maintain the original properties of epoxy resins, such as mechanical strength, adhesion, heat resistance, and chemical resistance. The innovative process involves treating an epoxy resin with modified adducts derived from conjugated diene polymers or copolymers. These adducts contain imido and/or amido bonds, as well as semi-ester structures, and possess an acid value due to free carboxyl groups ranging from 5 to 100. The modified adducts are created through a reaction involving a polymer of a conjugated diene and specific compounds that enhance the properties of the epoxy resin.

Career Highlights

Throughout his career, Takao Oshima has worked with prominent companies such as Sumitomo Chemical Company, Limited and Tohto Kasei Co., Ltd. His experience in these organizations has allowed him to refine his expertise in polymer chemistry and materials development.

Collaborations

Oshima has collaborated with notable colleagues, including Minoru Hino and Seimei Yasui. These partnerships have contributed to the advancement of his research and the successful development of innovative materials.

Conclusion

Takao Oshima's contributions to the field of modified epoxy resin compositions highlight his role as a leading inventor in materials science. His innovative approaches and collaborations have paved the way for advancements that benefit various industries.

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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