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For the Inventor, By the Inventor

Newark, DE, United States of America

Sang-Hak Hwang

This inventor holds 6 USPTO granted patents. Top assignee: E.i. Dupont De Nemours and Company. Active years: 1976-1995.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Sang-Hak Hwang. Retrieved from https://idiyas.com/inventor/sang-hak-hwang

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

USPTO Granted Patents = 6

% Patents Active = 100.0

Average Co-Inventor Count = 1.7

ph-index = 3

Forward Citations = 38(Granted Patents)


Location History:

  • Newark, DE (US) (1976 - 1978)
  • Wilmington, DE (US) (1985 - 1995)

Company Filing History:

goldMedal6 out of 16,339 
 
E.i. Dupont De Nemours and Company
 patents

Years Active: 1976-1995

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6 patents (USPTO):Explore Patents
1. 5430096 - Aqueous size for fiber reinforced high temperature composites (1995-07-04),
2. 4514455 - Nonwoven fabric for apparel insulating interliner (1985-04-30),
3. 4089086 - Air lay-down process for producing uniform lightweight webs from textile (1978-05-16),
4. 4043005 - Process for forming a staple fiber batt (1977-08-23),
5. 3981047 - Apparatus for forming a batt from staple fibers (1976-09-21),
6. 3932915 - Air-laydown apparatus for forming uniform webs of staple fibers (1976-01-20),

Title: The Innovations of Sang-Hak Hwang

Introduction

Sang-Hak Hwang is a notable inventor based in Newark, DE (US), recognized for his contributions to the field of materials science. He holds a total of six patents, showcasing his innovative approach to developing advanced materials for various applications.

Latest Patents

Among his latest patents is the "Aqueous size for fiber reinforced high temperature composites." This invention involves a stable aqueous size of ammonia-and/or amine-neutralized poly(amide-acid) derived from specific aromatic dianhydrides and aromatic diamines. Another significant patent is the "Nonwoven fabric for apparel insulating interliner." This composite nonwoven fabric is particularly suited for use as an insulating interliner in apparel. It comprises a batt of crimped polyester staple fibers and a nonwoven sheet of continuous polyester filaments, which are attached by a series of parallel seams. The fabric is designed to have a density of 15 to 24 kg/m³ and an insulating value of at least 7 CLO/(kg/m²).

Career Highlights

Sang-Hak Hwang is currently employed at E.I. DuPont de Nemours and Company, where he continues to innovate and develop new materials. His work has significantly impacted the industry, particularly in the realm of high-performance textiles.

Collaborations

He has collaborated with notable colleagues, including Rashmikant M Contractor and Thomas J Proffitt, Jr., contributing to a dynamic and innovative work environment.

Conclusion

Sang-Hak Hwang's contributions to materials science through his patents and collaborations highlight his role as a leading inventor in his field. His work continues to influence the development of advanced materials for various 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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