Patents by Inventor Ludger Wilbers

Ludger Wilbers 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).

  • Publication number: 20080196178
    Abstract: Dye mixtures including the dyes of the general formula (I) and dyes of the general formula (II) where R1 to R3, A, W and M are each as defined in claim 1, their preparation and their use for dyeing or printing hydroxyl- and/or carboxamido-containing material, preferably fiber material.
    Type: Application
    Filed: June 20, 2006
    Publication date: August 21, 2008
    Applicant: DyStar Textilfarben GmbH & Co. Deutschland KG I
    Inventors: Jorg Diekmann, Birgit Eden, Stefan Meier, Ludger Wilbers
  • Patent number: 6343395
    Abstract: The present invention relates to apparatus for the wet-processing of textile material, essentially comprising a vessel (1) comprising a fabric inlet (2), at least one nozzle (3) for applying a treatment liquor, an intensive zone (4) and a fabric outlet (5), wherein the vessel does not include a scray and has a minimized dead space through accurate fitment of the nozzle (3) and the intensive zone (4) into the vessel (1), and to a process for the wet-processing of textile material in the apparatus.
    Type: Grant
    Filed: June 3, 1999
    Date of Patent: February 5, 2002
    Assignee: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventors: Andreas Schrell, Ludger Wilbers
  • Patent number: 6044509
    Abstract: Process for continuous dyeing of cellulosic circular knits composed of natural or modified hydroxy-containing or natural, modified or synthetic carboxamido-containing fiber materials with water-soluble dyes comprises initially impregnating the material with an aqueous dye solution, optionally comprising auxiliaries, in the course of the dyeing step, reducing the liquor content to 400% by weight, based on weight of fiber, by squeezing means customary for tubular material, and subsequently subjecting the liquor-comprising material to a leveling and fixing step for the dye applied to the material by transporting the rope of material continuously through the machine unit by means of the flowing dyeing liquor at a liquor ratio of up to 10:1.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: April 4, 2000
    Assignee: Dystar Textilfarben GmbH & Co Deutschland KG
    Inventors: Andreas Schrell, Ludger Wilbers