Patents by Inventor Aart van Boven

Aart van Boven 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).

  • Dipeptidase, its isolation from lactic acid bacteria, antibodies against the dipeptidase, the use of the dipeptidase and of the antibodies against it
    Patent number: 4888284
    Abstract: This invention relates to dipeptidase of lactic acid bacteria in isolated form, characterized by a molecular weight of 55 kD.+-.5 kD; an isoelectric point of 4.4.+-.0.4; a substrate range including the dipeptides leu-leu, leu-met, leu-val, leu-gly, val-leu, phe-leu and ala-ala, but not the dipeptides his-leu, .gamma.-glu-leu, gly-leu, .alpha.-glu-ala and peptides of 3 or more amino acid residues; and a hydrolyzing activity with a temperature optimum at 50.degree. C..+-.10.degree. C., a pH optimum at 8.+-.1, and sensitivity to the metal chelating EDTA and to the reducing agents dithiotreitol and mercaptoethanol.
    Type: Grant
    Filed: March 31, 1988
    Date of Patent: December 19, 1989
    Assignee: Rijksuniversiteit te Groningen
    Inventors: Willem N. Konings, Aart van Boven