Patents by Inventor Gunnar Tilch

Gunnar Tilch 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 producing highly concentrated pigment presscakes
    Patent number: 6436182
    Abstract: The invention relates to an advantageous process for producing highly concentrated pigment presscakes which comprises concentrating a pigment suspension on a high-pressure filter press with a pressure of at least 16 bar to a pigment content of at least 50% by weight without adding nonionic surfactants which have a cloud point in water.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: August 20, 2002
    Assignee: Clariant GmbH
    Inventors: Leonhard Unverdorben, Uwe Nickel, Andreas Harz, Gunnar Tilch