Patents by Inventor Kee-Hyouk Lee

Kee-Hyouk 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).

  • Process for the continuous production of neopentyl glycol
    Patent number: 6201159
    Abstract: A neopentyl glycol having a purity of 98% or more is produced continuously by a process comprising the steps of: conducting an aldol condensation of isobutyraldehyde with an aqueous formaldehyde solution containing methanol in an amount of 0.1 to 15 wt % in the presence of a tertiary alkylamine catalyst; extracting the condensation product mixture with octanol; distilling the extract; hydrogenating the distillation product; extracting the hydrogenation product mixture with water; and subjecting the extract to distillation.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: March 13, 2001
    Assignee: LG Chemical Limited
    Inventors: Jung-Uk Choi, Seong-Moon Jung, Kee-Hyouk Lee, Ji-Joong Moon, Young-Jin Kim, Kwang-Ik Moon