Ibaraki, Japan

Hitoshi Shiiki

This inventor holds 2 USPTO granted patents. Top assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha. Active years: 1990-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hitoshi Shiiki. Retrieved from https://idiyas.com/inventor/hitoshi-shiiki

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 = 3.0

ph-index = 1

Forward Citations = 3(Granted Patents)


Company Filing History:


Years Active: 1990-1991

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2 patents (USPTO):Explore Patents

Title: Hitoshi Shiiki: Innovator in Polypropylene Resin Technology

Introduction

Hitoshi Shiiki is a notable inventor based in Ibaraki, Japan. He has made significant contributions to the field of materials science, particularly in the development of polypropylene resin technologies. With a total of 2 patents to his name, Shiiki's work has had a considerable impact on the industry.

Latest Patents

Hitoshi Shiiki's latest patents focus on polypropylene resin pre-expanded beads. The first patent describes a manufacturing method for these beads, which are formed by shrinking polypropylene resin pre-expanded beads originally having a bulk density of not higher than 0.0930 g/cc. This process results in a bulk volume ratio of 10-75% at normal temperature and pressure. The invention aims to greatly reduce storing and transporting costs per unit weight of pre-expanded beads.

Career Highlights

Shiiki is currently employed at Kanegafuchi Kagaku Kogyo Kabushiki Kaisha, where he continues to innovate in the field of materials science. His work has been instrumental in advancing the efficiency and cost-effectiveness of polypropylene resin products.

Collaborations

Some of Hitoshi Shiiki's coworkers include Kyoichi Nakamura and Minoru Tada. Their collaborative efforts contribute to the ongoing development of innovative materials and manufacturing processes.

Conclusion

Hitoshi Shiiki's contributions to polypropylene resin technology exemplify the importance of innovation in materials science. His patents not only enhance product efficiency but also offer significant cost savings in storage and transportation.

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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