Tokuyama, Japan

Norio Murai

This inventor holds 1 USPTO granted patent. Top assignee: Idemitsu Petrochemical Co., Ltd.. Active years: 1978.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Norio Murai. Retrieved from https://idiyas.com/inventor/norio-murai-woxpv4my

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 = 6.0

ph-index = 1

Forward Citations = 36(Granted Patents)


Company Filing History:


Years Active: 1978

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1 patent (USPTO):Explore Patents

Title: Norio Murai: Innovator in Polycarbonate Oligomer Production

Introduction

Norio Murai is a notable inventor based in Tokuyama, Japan. He has made significant contributions to the field of polymer chemistry, particularly in the production of polycarbonate oligomers. His innovative methods have paved the way for advancements in material science.

Latest Patents

Murai holds a patent for a "Method for producing a polycarbonate oligomer." This method involves preparing a polycarbonate oligomer with uniform qualities by reacting an aqueous alkaline solution of 2,2-(4,4'-dihydroxydiphenyl) propane with phosgene in the presence of methylene chloride. A key characteristic of this method is the use of an inert gas in an amount of 1 to 10 mol % based upon the phosgene.

Career Highlights

Murai is associated with Idemitsu Petrochemical Co., Ltd., where he has been able to apply his expertise in polymer production. His work has contributed to the development of high-quality polycarbonate materials that are essential in various applications.

Collaborations

Murai has collaborated with notable colleagues such as Ichiro Tokumitsu and Shigeaki Mochizuki. Their combined efforts have further enhanced the research and development in the field of polycarbonate oligomers.

Conclusion

Norio Murai's innovative approach to producing polycarbonate oligomers demonstrates his significant impact on the field of polymer chemistry. His contributions continue to influence advancements in material science and technology.

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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