Patents by Inventor Lukas Michaël Langen Van

Lukas Michaël Langen Van 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).

  • Patent number: 6897058
    Abstract: Method for the preparation of an enantiomerically enriched acylated amine wherein a phenylacetic acid derivative is brought into contact with a mixture of enantiomers of an amine H2NCR1R2R3, in which R1, R2, R3 are not equal to each other and each independently stand for H, CN, a whether or not substituted (cyclo)alkyl, ary-, alkylaryl or arylalkyl group, whether or not cyclic heteroalkyl or heteroaryl group with one or more N, O or S atoms or in which R1 and R2 (and R3) together with the C-atom to which they have been bound form a (bi)cyclic group that optionally contains one or more N, O of S atoms, in the presence of a Pen-G acylase derived from Alcaligenes faecalis. And method for the preparation of enantiomerically enriched amine of formula H2NCR1R2R3, in which R1, R2, R3 are as defined above, wherein an acylated amine is brought into contact with a Pen-G acylase originating from Alcaligenes faecalis.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: May 24, 2005
    Assignee: DSM IP Assets B.V.
    Inventors: Vytautas-Juozapas Kajetono {hacek over (S)}vedas, Dorel Teodor Guranda, Roger Arthur Sheldon, Frederik Rantwijk Van, Lukas Michaël Langen Van