Patents by Inventor Jong-hae Lee

Jong-hae Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Processes of regenerating Ni catalysts and of preparing Ni catalysts
    Patent number: 5674796
    Abstract: The present invention relates to processes of regenerating Ni catalysts which had been used in a hydrogenation of unsaturated fatty oil or petroleum resin, which comprise separating the Ni-extracted solution and support by extracting the pretreated Ni catalysts with an acid, preparing support-containing solution by burning the separated support in the flow of air or oxygen diluted with nitrogen at the temperature of 300.degree. to 800.degree. C.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: October 7, 1997
    Assignees: Lucky Engineering Co., Ltd., Seoul National University
    Inventors: Ho-in Lee, Sang-heup Moon, Gyo-hyun Hwang, Byung-youl Coh, Seung-hyun Hur, Sung-hee Han, Heung-sun Park, Jong-hae Lee