Patents by Inventor Gae C. Lee

Gae C. 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 purification and recovery of L-phenylalanine
    Patent number: 4960930
    Abstract: A process for purification and recovery of phenylalanine from a microbial fermentation broth containing phenylalanine which comprises providing a zinc salt of phenylalanine at a pH of 7-9, adding acid at a pH of 4-7, and separating precipitated phenylalanine.
    Type: Grant
    Filed: October 19, 1989
    Date of Patent: October 2, 1990
    Assignee: Miwon Co., Ltd.
    Inventors: Jong S. Kim, Min S. Han, Bun S. Lim, Gae C. Lee, Seung T. Lee