Okayama, Japan

Takaharu Kawahara

This inventor holds 17 USPTO granted patents and 2 EPO patents, primarily in Ethylene-Vinyl Copolymers. Top assignee: Kuraray Co., Ltd.. Active years: 1998-2010.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takaharu Kawahara. Retrieved from https://idiyas.com/inventor/takaharu-kawahara

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 = 3.4

ph-index = 6

Forward Citations = 114(Granted Patents)


Location History:

  • Okayama, JP (1998 - 2008)
  • Houston, TX (US) (2010)

Company Filing History:


Years Active: 1998-2010

Loading Chart...
Loading Chart...
Areas of Expertise:
Resin Composition
Multilayer Structure
Ethylene-Vinyl Alcohol
Copolymers
Saponification
Vinyl Acetate
Production Processes
Aqueous Compositions
Pellet Production
Manufacturing Apparatus
Ethylene-Vinyl Acetate
Polymer Resins
17 patents (USPTO):Explore Patents

Title: Takaharu Kawahara: Innovator in Resin Composition and Ethylene-Vinyl Alcohol Copolymer Technology

Introduction

Takaharu Kawahara is a prominent inventor based in Okayama, Japan. He has made significant contributions to the field of polymer science, particularly in the development of resin compositions and processes for producing ethylene-vinyl alcohol copolymer (EVOH) resins. With a total of 17 patents to his name, Kawahara's work has had a substantial impact on materials used in food packaging and other applications.

Latest Patents

Kawahara's latest patents include a resin composition that features an ethylene-vinyl alcohol copolymer (A) with an ethylene content ranging from 15 to 65 mol % and a degree of saponification of 95 mol % or more. This composition also includes a phosphoric acid salt (B) that can form a hydrate and a dispersing agent (C). The unique formulation excels in gas barrier properties and moisture resistance, making it ideal for food packaging containers that require retorting. Another notable patent details a process for producing EVOH resin, which involves specific temperature and water content controls during extrusion. This process results in resin pellets that exhibit improved discharging load and thermal stability.

Career Highlights

Kawahara is currently associated with Kuraray Co., Ltd., a leading company in the field of advanced materials. His innovative work has positioned him as a key figure in the development of high-performance polymers. His patents reflect a deep understanding of material science and engineering, contributing to advancements in packaging technology.

Collaborations

Kawahara has collaborated with notable colleagues such as Toshio Tuboi and Yukihiro Ohara. These partnerships have fostered a collaborative environment that enhances innovation and drives research forward.

Conclusion

Takaharu Kawahara's contributions to the field of resin compositions and EVOH technology demonstrate his commitment to innovation and excellence. His work continues to influence the industry, paving the way for advancements in material applications.

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]
Loading…