Patents by Inventor Georg Wellinghoff

Georg Wellinghoff 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).

  • Removal of riboflavin from fermentation suspensions
    Patent number: 5169759
    Abstract: Riboflavin is removed from fermentation suspensions by them being heated at from 50.degree. to 90.degree. C. for from 1 to 3 hours, than cooled to from 0.degree. to 30.degree. C. over a period of from 1 to 5 hours, and subsequently being centrifuged to give a sediment fraction and liquid fraction in such a way that the sediment fraction contains predominantly riboflavin crystals as solid, and the liquid fraction contains virtually no crystalline riboflavin, and, where appropriate, resuspending the sediment fraction in from 0.5 to 2 parts by volume of water per part by volume of sediment fraction and repeating procedure c.
    Type: Grant
    Filed: January 23, 1991
    Date of Patent: December 8, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Tillmann Faust, Joachim Meyer, Georg Wellinghoff, Walter Gosele, Christoph Martin, Johannes Grimmer