Patents by Inventor Karsten Kjaergaard

Karsten Kjaergaard 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 preparation of L-ascorbic acid
    Patent number: 6197977
    Abstract: The invention relates to a process for the preparation of L-ascorbic acid, which comprises lactonizing a melt of alkyl 2-keto-L-gulonate under acidic conditions.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: March 6, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Andreas Böttcher, Hans Gurski, Thomas Kuntze, Karsten Kjaergaard