Patents by Inventor Anke Badewitz

Anke Badewitz 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: 5935310
    Abstract: The present invention relates to an ink or India ink for variable ink applications, for writing, drawing, painting and printing, especially in connection with ink-jet systems or other mechanical writing, printing, painting or marking methods and/or devices, made up of organic solvent, as well as of a coloring agent and, optionally, water, binding agent and/or further additives. The coloring agent includes at least two chromophoric components, of which, in the print image, or after the stroke application or color application, at least one coloring-agent component is water-soluble, and a further coloring-agent component is water-insoluble. The components should include various colorants and/or color pigments, and should have at least one colorant that is water-soluble in the stroke application--especially under the influence of heat--and one water-insoluble colorant and/or one water-insoluble color pigment.
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: August 10, 1999
    Assignee: J.S. Staedtler GmbH & Co.
    Inventors: Stefan Engel, Anke Badewitz