Patents by Inventor Friedrich Grimmelijkhuizen

Friedrich Grimmelijkhuizen 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 the preparation of granules
    Patent number: 4846409
    Abstract: Low-dust, storage-stable granules are obtained in a continuous operating process in which the powder to be granulated is granulated in succession in a high-speed and low-speed mixing granulator, with the addition of a granulating liquid, and is then dried in a fluidized bed into which a liquid containing a binder is sprayed. The process is particularly suitable for the preparation of dyestuff granules which can easily be dispersed in the use medium.
    Type: Grant
    Filed: September 28, 1987
    Date of Patent: July 11, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Vaclav Kaspar, Manfred Baecker, Horst Brandt, Friedrich Grimmelijkhuizen, Karlheinz Wolf