Patents by Inventor Henk Pluim

Henk Pluim 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).

  • Method for separating organic substances
    Patent number: 5464514
    Abstract: The present invention is concerned with the separation of organic compounds in a mixture using their tendency of binding a weak acid by applying electrodialysis to a mixture of at least one of said organic compounds and said weak acid, while preferably an ionexchange resin is present in the electrodialysis cell.
    Type: Grant
    Filed: February 2, 1994
    Date of Patent: November 7, 1995
    Assignee: Duphar International Research B.V.
    Inventors: Henk Pluim, Jan G. Kraaijenbrink
  • Solid lactulose
    Patent number: 5326405
    Abstract: The present invention is concerned with a method for the preparation of crystal-water-free crystalline lactulose by subjecting an aqeous solution or suspension of lactulose to simultaneous reduction of the water content by evaporation and continuous stirring, optionally in the presence of seed crystals, until a free-flowing solid powder is obtained.
    Type: Grant
    Filed: October 9, 1991
    Date of Patent: July 5, 1994
    Assignee: Duphar International Research B.V.
    Inventors: Henk Pluim, Jan G. Kraaijenbrink