Patents by Inventor Gerhard Kaudela

Gerhard Kaudela 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 granular dye formulations from polyethylene glycol melt
    Patent number: 4604100
    Abstract: The invention describes a process for the preparation of granular dye formulations by melt granulation, using a polyethylene glycol as melt vehicle. The essential feature of the invention is that a start is made from the dye which contains water, for example from the aqueous filter cake or synthesis solution, and adjusting the moisture content of the granular formulations to 1 to 30% by partial evaporation of water from the dye/polyethylene glycol melt.
    Type: Grant
    Filed: March 11, 1985
    Date of Patent: August 5, 1986
    Assignee: Ciba-Geigy Corporation
    Inventors: Dieter Schneider, Heinz Knies, Gerhard Kaudela