Patents by Inventor Kerstin Sperner

Kerstin Sperner 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: 8552070
    Abstract: A pigment preparation with metallic effect pigments in compacted form, the pigment preparation including the following components: a) 60%-95% by weight of at least one metallic effect pigment which has at least one low-refractive-index layer (low-index layer) on the metallic core of the metallic effect pigment, the low-index layer comprising or consisting of at least one inorganic component, b) 0.5%-40% by weight of a binder which is free from styrene groups, has an acid number of 150-500 mg KOH/g binder, and a melting point or melting range which lies in the range of 120-200° C., c) a residual moisture content in the range of 0%-15% by weight of at least one of water, organic solvent and a solvent mixture and d) optionally neutralizing agent(s). The disclosure further relates to a method for producing the pigment preparation and also to the use thereof.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: October 8, 2013
    Assignee: Eckart GmbH
    Inventors: Alexander Albrecht, Kerstin Sperner
  • Publication number: 20110207833
    Abstract: A pigment preparation with metallic effect pigments in compacted form, the pigment preparation including the following components: a) 60%-95% by weight of at least one metallic effect pigment which has at least one low-refractive-index layer (low-index layer) on the metallic core of the metallic effect pigment, the low-index layer comprising or consisting of at least one inorganic component, b) 0.5%-40% by weight of a binder which is free from styrene groups, has an acid number of 150-500 mg KOH/g binder, and a melting point or melting range which lies in the range of 120-200° C., c) a residual moisture content in the range of 0%-15% by weight of at least one of water, organic solvent and a solvent mixture and d) optionally neutralizing agent(s). The disclosure further relates to a method for producing the pigment preparation and also to the use thereof.
    Type: Application
    Filed: August 18, 2009
    Publication date: August 25, 2011
    Inventors: Alexander Albrecht, Kerstin Sperner