This inventor holds 9 USPTO granted patents. Top assignees: Korea Institute of Science and Technology, Korea Advanced Institute of Science and Technology. Active years: 1986-1999.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
8 out of 2,250 
1 out of 2,792 
Years Active: 1986-1999
Title: Chul J Lee: Innovator in Separation Membranes and Acrylic Fibers
Introduction
Chul J Lee is a prominent inventor based in Seoul, South Korea. He holds a total of 9 patents that showcase his contributions to the fields of material science and engineering. His innovative work primarily focuses on separation membranes and acrylic fibers, which have significant applications in various industries.
Latest Patents
One of his latest patents involves the development of separation membranes prepared from polyamide polymers. This invention provides a polyamide separation membrane, which is prepared from high molecular weight polyamide featuring a specific repeating unit. The membrane is designed for separating gaseous mixtures, offering a large free volume and excellent permeation properties, including permeability and permeation selectivity. Another notable patent is for highly-oriented acrylic staple fibers, which are produced through a simple extrusion process of a PAN/H2O melt in a gel crystalline state. These acrylic fibers exhibit remarkable properties, such as a degree of orientation between 80 and 97%, a tensile strength ranging from 10 to 70 kg/mm², and a specific surface area of 1 to 50 m²/g.
Career Highlights
Chul J Lee has made significant strides in his career, working with esteemed institutions such as the Korea Institute of Science and Technology and the Korea Advanced Institute of Science and Technology. His research and innovations have contributed to advancements in material science, particularly in the development of efficient separation technologies and high-performance fibers.
Collaborations
Throughout his career, Chul J Lee has collaborated with notable colleagues, including Byung G Min and Tae W Son. These collaborations have further enhanced his research and innovation capabilities, leading to impactful inventions in his field.
Conclusion
Chul J Lee's contributions to the fields of separation membranes and acrylic fibers highlight his innovative spirit and dedication to advancing material science. His patents reflect a commitment to developing technologies that improve efficiency and performance in various applications.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile