Kuto-Ku, Japan

Tadao Hirasawatsu

This inventor holds 3 USPTO granted patents. Top assignee: Yoshino Kogyosho Co., Ltd.. Active years: 1981-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tadao Hirasawatsu. Retrieved from https://idiyas.com/inventor/tadao-hirasawatsu

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


% Patents Active = 66.7

Average Co-Inventor Count = 3.6

ph-index = 2

Forward Citations = 14(Granted Patents)


Location History:

  • Matsudo, JP (1981)
  • Tokyo, JP (2006)
  • Kuto-Ku, JP (2011)

Company Filing History:


Years Active: 1981-2011

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3 patents (USPTO):Explore Patents

Title: Tadao Hirasawatsu: Innovator in Blow-Molding Technology

Introduction

Tadao Hirasawatsu is a notable inventor based in Kuto-Ku, Japan. He has made significant contributions to the field of blow-molding technology, particularly in the production of polyethylene terephthalate (PET) containers. With a total of 3 patents to his name, Hirasawatsu's work has advanced the efficiency and effectiveness of manufacturing processes in this industry.

Latest Patents

Hirasawatsu's latest patents include innovative methods and devices that enhance the production of bottle-shaped containers. One of his key inventions is a crystallization method for the neck of a primary molded product used in biaxially-oriented blow-molded containers. This method involves heating the neck and squeezing the bead ring to ensure proper dimensional tolerance for sealing effects. Another significant patent is a preform conveying device designed to align multiple preforms in single rows at high speed, minimizing contact between individual preforms and device parts. This invention aims to improve production efficiency and streamline the manufacturing process.

Career Highlights

Hirasawatsu is currently employed at Yoshino Kogyosho Co., Ltd., where he continues to innovate and develop new technologies in the blow-molding sector. His work has not only contributed to the company's success but has also set new standards in the industry.

Collaborations

Throughout his career, Hirasawatsu has collaborated with talented individuals such as Yoshihiro Iimura and Katsuzi Mitani. These partnerships have fostered a creative environment that encourages the development of groundbreaking technologies.

Conclusion

Tadao Hirasawatsu's contributions to blow-molding technology exemplify the impact of innovation in manufacturing processes. His patents reflect a commitment to enhancing production efficiency and quality in the industry.

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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