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For the Inventor, By the Inventor

Otsu, Japan

Yoshishige Fujii

This inventor holds 3 USPTO granted patents and 1 published patent application. Top assignee: Toray Industries, Inc.. Active years: 1979-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshishige Fujii. Retrieved from https://idiyas.com/inventor/yoshishige-fujii

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

USPTO Granted Patents = 3 

% Patents Active = 100.0

Average Co-Inventor Count = 3.0

ph-index = 3

Forward Citations = 60(Granted Patents)


Location History:

  • Ohtsu, JP (1981)
  • Otsu, JP (1979 - 1994)

Company Filing History:

goldMedal3 out of 3,581 
 
Toray Industries, Inc.
 patents

Years Active: 1979-1994

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3 patents (USPTO):Explore Patents
1. 5324538 - Process for producing composite semipermeable membrane employing a (1994-06-28),
2. 4293418 - Fluid separation apparatus (1981-10-06),
3. 4148606 - Sterilization of dialyzer (1979-04-10),

Title: Innovations of Yoshishige Fujii

Introduction

Yoshishige Fujii is a notable inventor based in Otsu, Japan. He has made significant contributions to the field of membrane technology, holding a total of 3 patents. His work primarily focuses on processes and apparatuses that enhance fluid separation.

Latest Patents

Fujii's latest patents include a process for producing a composite semipermeable membrane. This innovative process involves applying a polyfunctional amine solution and a polyfunctional acid halide solution in a hydrocarbon-based solvent on a microporous substrate. The method allows for an interfacial polycondensation reaction, resulting in a cross-linked polyamide-based ultra-thin membrane. Additionally, he has developed a fluid separation apparatus that comprises a bundle of permselective hollow fibers. This apparatus is particularly advantageous for use as an artificial kidney.

Career Highlights

Yoshishige Fujii is currently associated with Toray Industries, Inc., a leading company in advanced materials and technologies. His work has significantly impacted the development of efficient fluid separation technologies.

Collaborations

Fujii has collaborated with notable coworkers such as Syozo Nagao and Shunji Kumazawa, contributing to advancements in their respective fields.

Conclusion

Yoshishige Fujii's innovative work in membrane technology and fluid separation has established him as a prominent figure in his field. His contributions continue to influence advancements in medical and industrial applications.

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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