Patents by Inventor Hans Hilgenfeld

Hans Hilgenfeld 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: 6391388
    Abstract: A process for producing a multicolored print by employing a color scanner that is capable of being profiled and an electronic image processor. Color data pertaining to color fields are taken as the basis for determining an algorithm for the printable color range and the separation, the color data being generated by employing ceramic colors of a multicolor set that are compatible with one another. With a view to producing four-color prints and also, in particular, seven-color prints that are truer to the original, four-color and seven-color sets as claimed are employed such as were taken as the basis for the color fields for determination of the algorithm. By means of seven-color printing, the color space is extended.
    Type: Grant
    Filed: October 9, 1998
    Date of Patent: May 21, 2002
    Assignee: dmc
    Inventors: Hans Hilgenfeld, Fritz Diefenbach, Karl Koch