Patents by Inventor Guido J. L. Van der Veken

Guido J. L. Van der Veken 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 isolating levamisole from tetramisole
    Patent number: 4672126
    Abstract: A process for isolating levamisole or a therapeutically acceptable acid addition salt thereof from tetramisole or an acid addition salt thereof by precipitating levamisole. L-N-[(4-methoxyphenyl)sulfonyl]-glutamic acid (salt) and converting the diastereomeric salt into levamisole or a suitable acid addition salt thereof.
    Type: Grant
    Filed: October 1, 1984
    Date of Patent: June 9, 1987
    Assignee: Janssen Pharmaceutica, N.V.
    Inventors: Guido J. L. Van der Veken, Eric J. Guns, Albert L. A. Willemsens
  • Non-toxic anthelminthic pour-on composition
    Patent number: 4278684
    Abstract: The present invention relates to non-aggressive pour-on compositions for combating helminthic infestations in a non-human animal, said compositions comprising an anthelminthic amount of tetramisole and/or levamisole, a carboxylic acid and a di(lower alkyl) ester of a dicarboxylic acid.
    Type: Grant
    Filed: June 17, 1980
    Date of Patent: July 14, 1981
    Assignee: Janssen Pharmaceutica N.V.
    Inventors: Guido J. L. Van der Veken, Jozef C. J. Dockx