Patents by Inventor Hans-Ulrich Herrmann

Hans-Ulrich Herrmann 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).

  • Method for the mapping of colour values of a colour image in the colour values of a highlight-colour image and corresponding print system
    Patent number: 7333236
    Abstract: The invention relates to a mapping method, whereby color values of the color image to be mapped, represented in the RGB color space are mapped in the highlight-color color space, corresponding to a projection of the color values in highlight-color. The corresponding calculations are carried out in the RGB color space. A transformation into another color space is not necessary. Furthermore, various corrections are provided, such that a highlight color image is created which is as natural as possible for the human eye.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: February 19, 2008
    Assignee: Oce Printing Systems GmbH
    Inventor: Hans Ulrich Herrmann
  • Method for the mapping of colour values of a colour image in the colour values of a highlight-colour image and corresponding print system
    Publication number: 20030160982
    Abstract: The invention relates to a mapping method, whereby colour values of the colour image to be mapped, represented in the RGB colour space are mapped in the highlight-colour colour space, corresponding to a projection of the colour values in highlight-colour. The corresponding calculations are carried out in the RGB colour space. A transformation into another colour space is not necessary. Furthermore, various corrections are provided, such that a highlight colour image is created which is as natural as possible for the human eye.
    Type: Application
    Filed: March 11, 2003
    Publication date: August 28, 2003
    Inventor: Hans Ulrich Herrmann
  • Process for the production of benzanthrone
    Patent number: 4559176
    Abstract: The invention describes a process for the production of benzanthrone by reacting anthraquinone with glycerol and/or acrolein, using anthrone as reducing agent.Benzanthrone is an important intermediate for dyes and is used in particular for the preparation of vat dyes.
    Type: Grant
    Filed: July 9, 1984
    Date of Patent: December 17, 1985
    Assignee: Ciba Geigy AG
    Inventors: Martin Burli, Jacques Bersier, Eric Plattner, Hans-Ulrich Herrmann