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For the Inventor, By the Inventor

Oita, Japan

Toshiyuki Iwashita

This inventor holds 4 USPTO granted patents. Top assignee: Showa Denko K.k.. Active years: 1992-1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshiyuki Iwashita. Retrieved from https://idiyas.com/inventor/toshiyuki-iwashita

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

Calculating rank
USPTO Granted Patents = 4

% Patents Active = 100.0

Average Co-Inventor Count = 4.0

ph-index = 3

Forward Citations = 22(Granted Patents)


Location History:

  • All of Oita, JP (1995)
  • Oita, JP (1992 - 1997)

Company Filing History:

goldMedal4 out of 1,961 
 
Showa Denko K.k.
 patents

Years Active: 1992-1997

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4 patents (USPTO):Explore Patents
1. 5693424 - Ethylenic copolymer thermoplastic resin laminates (1997-12-02),
2. 5453462 - Thermoplastic resin composition (1995-09-26),
3. 5252675 - Cured product of a modified multiplex ethylene copolymer (1993-10-12),
4. 5093429 - Multiplex ethylene copolymer, process for preparation thereof and cured (1992-03-03),

Title: The Innovations of Toshiyuki Iwashita

Introduction

Toshiyuki Iwashita is a notable inventor based in Oita, Japan. He has made significant contributions to the field of thermoplastic resin technology. With a total of 4 patents, his work has advanced the understanding and application of ethylenic copolymers.

Latest Patents

Iwashita's latest patents include innovative developments in multilayered laminates and thermoplastic resin compositions. One of his patents describes an ethylenic copolymer thermoplastic resin laminate, which comprises at least one thermoplastic resin layer of an ethylenic copolymer. This copolymer includes ethylene and various derivatives, such as acrylamide and methacrylamide. Additionally, it features other thermoplastic resin layers and a hydroscopic gas barrier intermediate layer. Another patent focuses on a thermoplastic resin composition that includes an ethylenic copolymer containing acrylamide and methacrylamide derivative units, along with other thermoplastic resins.

Career Highlights

Toshiyuki Iwashita is currently employed at Showa Denko K.K., where he continues to innovate in the field of materials science. His work has been instrumental in developing new materials that enhance product performance and sustainability.

Collaborations

Throughout his career, Iwashita has collaborated with esteemed colleagues, including Hitoshi Funada and Katsuaki Tsutsumi. These partnerships have fostered a creative environment that encourages the exchange of ideas and expertise.

Conclusion

Toshiyuki Iwashita's contributions to thermoplastic resin technology exemplify the spirit of innovation. His patents reflect a commitment to advancing material science and improving product functionality.

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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