Patents by Inventor Riitta Helena Kristiina Kivikari

Riitta Helena Kristiina Kivikari 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 the separation of sterols
    Patent number: 4044031
    Abstract: Process for the separation of sterols or mixtures of sterols from mixtures of unsaponifiables obtained from crude soap skimmings, soap of vegetable oil, animal fat or the like, by dissolving the mixture of unsaponifiables, extracting the polar components including the sterols into a hydrophilic solvent mixture, separating the hydrophilic phase and crystallizing the sterols from said phase by concentrating and cooling.
    Type: Grant
    Filed: July 2, 1976
    Date of Patent: August 23, 1977
    Inventors: Ake Allan Johansson, Riitta Helena Kristiina Kivikari, Elias Uolevi Suokas