Patents by Inventor Ewan Y. W. Ha

Ewan Y. W. Ha 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).

  • Method for producing microcrystalline cellulose
    Patent number: 5769934
    Abstract: A method for producing microcrystalline cellulose by the steps of subjecting a cellulose source material to steam explosion treatment, extracting the steam treated cellulosic material to remove hemicellulose and lignin, and recovering microcrystalline cellulose that is substantially colloidal in particle size and essentially free of fibrous cellulose.
    Type: Grant
    Filed: January 15, 1997
    Date of Patent: June 23, 1998
    Assignee: FMC Corporation
    Inventors: Ewan Y. W. Ha, Carol D. Landi