Sodegaura, Japan

Masaya Tsubokawa

This inventor holds 5 USPTO granted patents, plus 1 CIPO patent. Top assignees: Idemitsu Petrochemical Co., Ltd., Ngk Spark Plug Company, Limited. Active years: 1992-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaya Tsubokawa. Retrieved from https://idiyas.com/inventor/masaya-tsubokawa

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 = 2.7

ph-index = 3

Forward Citations = 37(Granted Patents)


Location History:

  • Sodegaura, JP (1992 - 1994)
  • Ichihara, JP (2000)

Company Filing History:


Years Active: 1992-2000

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5 patents (USPTO):Explore Patents

Title: Masaya Tsubokawa: Innovator in Propylene Resin Technology

Introduction

Masaya Tsubokawa is a notable inventor based in Sodegaura, Japan. He has made significant contributions to the field of materials science, particularly in the development of propylene resin compositions. With a total of 5 patents to his name, Tsubokawa's work has had a substantial impact on various industries.

Latest Patents

Tsubokawa's latest patents include innovative formulations for propylene resin. One of his key inventions is a propylene resin composition that incorporates a nucleating agent and has a melt index (MI) of not greater than 1.2 g/10 min. This composition is designed to meet specific viscosity requirements, enabling the manufacture of large-sized blow-molded articles that are lightweight, rigid, and dimensionally stable. Another significant patent involves a propylene resin composition that contains both a phenolic antioxidant and a phosphorus-containing antioxidant. This formulation is particularly advantageous for producing blow moldings used in automobile parts, such as bumpers and bumper beams.

Career Highlights

Throughout his career, Tsubokawa has worked with prominent companies in the petrochemical and automotive sectors. He has been associated with Idemitsu Petrochemical Co., Ltd. and NGK Spark Plug Company, Limited. His expertise in resin technology has allowed him to contribute to advancements in manufacturing processes and product performance.

Collaborations

Tsubokawa has collaborated with several professionals in his field, including Toshimichi Ito and Masakazu Watanabe. These collaborations have fostered innovation and the sharing of knowledge, further enhancing the development of new materials.

Conclusion

Masaya Tsubokawa's contributions to propylene resin technology exemplify the importance of innovation in material science. His patents not only advance the field but also provide practical solutions for industries reliant on high-performance 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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