Patents by Inventor Ralph L. Yuhasz

Ralph L. Yuhasz 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 isolation of caffeine-free catechins from green tea
    Patent number: 6210679
    Abstract: The process of the present invention relates to the isolation and purification of caffeine-free mixtures catechins from various different biomass sources, preferably from green tea leaves. More particularly, the present invention relates to a four-step process whereby highly pure, caffeine-free EGCG is isolated in high yields. These catechins may be used in pharmaceutical, nutraceutical and cosmetic products.
    Type: Grant
    Filed: January 7, 1999
    Date of Patent: April 3, 2001
    Assignee: Hauser, Inc.
    Inventors: David T. Bailey, Ralph L. Yuhasz, BoLin Zheng