Patents by Inventor Pieter J. B. Nijsten

Pieter J. B. Nijsten 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: 5779945
    Abstract: A process for producing granules from a liquid composition which includes the steps of applying the liquid composition onto solid particles of the same composition circulating in the granulation zone of a granulator, thereby causing particles to grow, discharging a stream of grown particles from the granulation zone, cooling this stream in a cooler, and dividing the stream exiting the cooler, in a size-sorting apparatus, into three streams of grown particles based on size. The stream of desired-sized particles is withdrawn for future use or processing, the stream of undersized particles is returned to the granulation zone and the stream of oversized particles is sent to a size-reducing apparatus for crushing, with the resulting crushed particles recycled back to the cooler located downstream of the granulator and upstream of the size-sorting apparatus.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: July 14, 1998
    Assignee: DSM N.V.
    Inventors: Pieter J. B. Nijsten, Peter J. M. Starmans