Patents by Inventor Hubert Karel Lemmen

Hubert Karel Lemmen 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 recovering growth factors, or a composition containing one or more growth factors, from milk or a milk derivative
    Patent number: 6010698
    Abstract: The invention relates to a process for recovering one or more growth factors from milk or a milk derivative, comprising adsorbing at least one growth factor from the milk or the milk derivative to a cation exchanger, followed by fractionated elution of the cation exchanger, whereby at least one fraction is obtained which is enriched in growth factors, followed by the further treatment of this fraction at a pH of at least 3.5 and not more than 4.5.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: January 4, 2000
    Assignee: Campina Melkunie B. V.
    Inventors: Klaas Daniel Kussendrager, Marinus Gerardus Cornelis Kivits, Hubert Karel Lemmen, Theodorus Johannes Antonia Maria van Kessel