Patents by Inventor Robert Maurice Ippolito

Robert Maurice Ippolito 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).

  • Patent number: 5962678
    Abstract: Individual sweet glycosides are obtained from the stevia rebaudiana plant. A mixture of sweet glycosides extracted from the stevia rebaudiana plant are processed to remove impurities by using two ion exchange columns. After removing the mixed sweet glycosides from the second column with methanol the solution is dried. Upon refluxing the dried solids in a methanol solution and then cooling the solution, Stevioside precipitates out. The filtrate is further concentrated and cooled to precipitate out Rebaudioside A. This Rebaudioside A can be further purified as can the previously obtained Stevioside.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: October 5, 1999
    Assignee: Alberta Research Council
    Inventors: John Donald Payzant, James Kenneth Laidler, Robert Maurice Ippolito