Nara, Japan

Ikuo Morioka

This inventor holds 6 USPTO granted patents and 2 EPO patents. Top assignees: Sekisui Plastics Co., Ltd., Sekisui Kaseihin Kogyo Kabushiki Kaisha. Active years: 1996-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ikuo Morioka. Retrieved from https://idiyas.com/inventor/ikuo-morioka

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 = 3.5

ph-index = 3

Forward Citations = 19(Granted Patents)


Location History:

  • Nara, JP (1996 - 2000)
  • Shiga, JP (2003 - 2010)
  • Tokyo, JP (2011)

Company Filing History:


Years Active: 1996-2011

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6 patents (USPTO):Explore Patents

Title: Ikuo Morioka: Innovator in Expandable Polystyrenic Resin Technology

Introduction

Ikuo Morioka is a notable inventor based in Nara, Japan. He has made significant contributions to the field of expandable polystyrenic resin technology. With a total of 6 patents to his name, Morioka's work has advanced the production processes and applications of these materials.

Latest Patents

Morioka's latest patents include innovations in expandable polystyrenic resin particles and their production processes. One of his key inventions focuses on expandable polystyrenic resin particles that exhibit superior resistance to cracking in molded foam products. These particles maintain their expandability over extended periods while retaining a volatile blowing agent. The production process involves impregnating and polymerizing a styrenic monomer within polyolefin resin particles. The resulting resin particles have an average surface layer thickness of 15 to 150 μm and contain a volatile blowing agent at a weight percentage of 5.5 to 13.0%. Another significant patent involves pre-expanded beads of olefin-modified polystyrene resin, which are produced using a specific ratio of styrene-based monomer to polyolefin-based resin. These beads have a bulk density ranging from 0.012 to 0.20 g/cm³ and exhibit specific absorbance ratios measured by infrared absorption spectroscopy.

Career Highlights

Throughout his career, Morioka has worked with prominent companies in the plastics industry, including Sekisui Plastics Co., Ltd. and Sekisui Kaseihin Kogyo Kabushiki Kaisha. His experience in these organizations has contributed to his expertise in resin technology and innovation.

Collaborations

Morioka has collaborated with notable colleagues such as Hideyasu Matsumura and Hiroyuki Yamagata. Their combined efforts have furthered advancements in the field of expandable polystyrenic resins.

Conclusion

Ikuo Morioka's contributions to expandable polystyrenic resin technology have established him as a key figure in the industry. His innovative patents and collaborations continue to influence the development of advanced materials.

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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