Patents by Inventor Janina Ohnsmann

Janina Ohnsmann 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).

  • Magenta quinacridone pigments
    Patent number: 8968454
    Abstract: The invention relates to single phase solid solutions containing 65 to 98 wt.-% unsubstituted quinacridone, 1 to 34 wt.-% 2,9-dimethylquinacridone and 1 to 10 wt.-% 2,9-dichloroquinacridone, relative to the total weight of the single phase solid solution.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: March 3, 2015
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Gemma Solduga Ramirez, Janina Ohnsmann, Carsten Plueg
  • New Magenta Quinacridone Pigments
    Publication number: 20130029265
    Abstract: The invention relates to single phase solid solutions containing 65 to 98 wt.-% unsubstituted quinacridone, 1 to 34 wt.-% 2,9-dimethylquinacridone and 1 to 10 wt.-% 2,9-dichloroquinacridone, relative to the total weight of the single phase solid solution.
    Type: Application
    Filed: March 23, 2011
    Publication date: January 31, 2013
    Applicant: CLARIANT FINANCE (BVI) LIMITED
    Inventors: Gemma Solduga Ramirez, Janina Ohnsmann, Carsten Plueg