This inventor holds 2 USPTO granted patents and 1 EPO patent. Top assignee: Sk Chemicals Co., Ltd.. Active years: 2006-2011.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Ansan, KR (2006)
- Ansan-si, KR (2011)
Company Filing History:
Years Active: 2006-2011
Title: Innovations by Hang-Duk Roh in Bio-Diesel and Chemical Refinement
Introduction
Hang-Duk Roh is an accomplished inventor based in Ansan-si, South Korea. He has made significant contributions to the fields of bio-diesel production and chemical refinement. With a total of 2 patents, his work focuses on innovative methods that enhance efficiency and sustainability in these industries.
Latest Patents
One of his notable patents is a method and apparatus for preparing fatty acid alkyl ester using fatty acid. This invention addresses the production of bio-diesels by allowing fatty acid distillate to react with alcohol without the need for a catalyst. The process eliminates the purification steps for the catalyst and glycerin, achieving a superior conversion ratio of fatty acid. The method operates under specific conditions, esterifying fatty acid raw material with alcohol at temperatures ranging from 200 to 350°C and pressures from atmospheric pressure to 10 bar. The apparatus designed for this process includes a first reactor that converts 80 to 90% of total fatty acid into fatty acid alkyl ester and a second reactor for the remaining conversion.
Another significant patent by Hang-Duk Roh is a method for refining 2,6-naphthalene dicarboxylic acid. This method involves recrystallizing crude 2,6-naphthalene dicarboxylic acid in the form of an amine salt using a solvent that includes a protic polar solvent, such as alcohol or water, along with an acetate. This innovative approach results in high purity and color of the refined acid while being economical and environmentally friendly, as it utilizes acetate, a byproduct of the oxidation process, as a solvent.
Career Highlights
Hang-Duk Roh is currently associated with Sk Chemicals Co., Ltd., where he continues to develop and refine his innovative ideas. His work has positioned him as a key figure in the advancement of sustainable chemical processes.
Collaborations
He has collaborated with notable coworkers, including Jong-In Lee and Shin-ho Chun, contributing to a dynamic and innovative work environment.
Conclusion
Hang-Duk Roh's contributions to the fields of bio-diesel production and chemical refinement demonstrate his commitment to innovation and sustainability. His patents reflect a deep understanding of chemical processes and a drive to improve efficiency in production methods.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile