Chiba, Japan

Naoshi Hagihara

This inventor holds 1 USPTO granted patent. Top assignee: Mitsui Toatsu Chemicals, Incorporated. Active years: 1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Naoshi Hagihara. Retrieved from https://idiyas.com/inventor/naoshi-hagihara-hgfvdhg2

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 = 5.0

ph-index = 1

Forward Citations = 14(Granted Patents)


Company Filing History:


Years Active: 1991

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1 patent (USPTO):Explore Patents

Title: Naoshi Hagihara and His Patent for Producing D-α-Amino Acids.

Introduction

Naoshi Hagihara is an inventor associated with Chiba, Japan, and Mitsui Toatsu Chemicals, Incorporated. His patent work concerns a process for producing D-α-amino acids from 5-substituted hydantoins.

Latest Patents

Hagihara is credited with 1 patent: “Process for Producing D-α-Amino Acids.” The invention describes using cultured broth, cells, or treated cells of the genus *Hansenula* to transform 5-substituted hydantoins into D-α-amino acids. The hydantoins and resulting amino acids may contain alkyl, substituted alkyl, phenyl, or substituted phenyl groups.

Career Highlights

Hagihara’s listed patent connects his work at Mitsui Toatsu Chemicals, Incorporated, with a biotechnological process for producing D-α-amino acids. The available information identifies his location as Chiba, Japan.

Collaborations

Hitoshi Tarukawa and Nobuyoshi Makiguchi are identified as Hagihara’s coworkers.

Conclusion

Naoshi Hagihara’s recorded invention applies *Hansenula* cultures or cells to the production of D-α-amino acids from substituted hydantoins, reflecting his patent-related work with Mitsui Toatsu Chemicals, Incorporated.

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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