This inventor holds 7 USPTO granted patents and 2 published patent applications and 4 EPO patents. Top assignee: Kolon Industries, Inc.. Active years: 2006-2014.
Location History:
- Daegu-si, KR (2006)
- Daegu, KR (2010 - 2014)
Company Filing History:
Years Active: 2006-2014
Title: In-Sik Han: Innovator in Aromatic Polyamide Filaments
Introduction
In-Sik Han is a prominent inventor based in Daegu, South Korea. He has made significant contributions to the field of polymer science, particularly in the development of aromatic polyamide filaments. With a total of 7 patents to his name, Han's work has advanced the manufacturing processes of these materials, enhancing their properties and applications.
Latest Patents
One of Han's latest patents is focused on the "Process of making wholly aromatic polyamide filament." This invention discloses a method characterized by multi-stage injection of a coagulant with sequentially lowered sulfuric acid concentration into a spun material. This innovative approach allows for increased spinning and take-up velocity without thread cutting, while also recovering and reusing coagulants or water, thus reducing production costs and environmental contamination. The resulting filament exhibits high crystallinity, large apparent crystal size, and improved physical properties such as strength and modulus.
Another notable patent is the "Process of making aromatic polyamide filament." This method involves an agitation device within the reactor that enhances the polymerization process. By controlling the rotor's spin speed and regulating the contact frequency between pins, the invention ensures uniform and homogeneous polymerization. This results in a filament with a narrow polydispersity index and reduced defects, significantly improving its strength and modulus.
Career Highlights
In-Sik Han is currently associated with Kolon Industries, Inc., a leading company in the field of advanced materials. His work at Kolon has been instrumental in pushing the boundaries of polymer technology, particularly in the production of high-performance fibers.
Collaborations
Han has collaborated with notable colleagues, including Jae-Young Lee and So-Yeon Kwon. These partnerships have fostered innovation and contributed to the successful development of new materials and processes.
Conclusion
In-Sik Han's contributions to the field of aromatic polyamide filaments have established him as a key figure in polymer innovation. His patents reflect a commitment to enhancing material properties while promoting sustainable manufacturing practices. His work continues to influence the industry and pave the way for future advancements.