Patents by Inventor Albert Epstein

Albert Epstein 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).

  • Riboflavin purification
    Patent number: 4165250
    Abstract: Riboflavin is recovered from fermentation broth by diluting the broth with a predetermined quantity of water, centrifuging the diluted broth to form a sludge, resuspending the sludge with a predetermined quantity of water, and centrifuging the resuspended sludge to yield a product usuable directly as an animal feed supplement or suitable for further purification for pharmaceutical use. Optionally the broth or resuspended sludge is treated with an enzyme before centrifugation.
    Type: Grant
    Filed: November 14, 1977
    Date of Patent: August 21, 1979
    Assignee: Merck & Co., Inc.
    Inventors: Albert Epstein, Glen Graham, William A. Sklarz