Patents by Inventor Melita Heller

Melita Heller 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).

  • Surface-modified zinc oxide for the production of nanoparticulate dispersions
    Patent number: 7348029
    Abstract: The present invention relates to a surface-modified nanoscale zinc oxide, where the surface modification involves coating with an oligo- or polyethylene glycol acid. This surface-modified zinc oxide is characterized in that it forms stable dispersions in a liquid medium. In addition, the present invention relates to a process for the production of surface-modified zinc oxide, and also to a process for the production of nanoscale zinc oxide dispersions.
    Type: Grant
    Filed: June 21, 2004
    Date of Patent: March 25, 2008
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rainer Kliss, Ralf Elsässer, Melita Heller, Christian Umbreit, Horst Hahn, Christian Kropf, Mete Berber, Victor Bulto Carulla
  • Nano-sized materials in hygiene products
    Publication number: 20050234416
    Abstract: Hygiene products such as diapers, tampons, pantyliners and the like are produced using body-compatible substances in the form of nanoparticles having surfaces that have been chemically and/or physically modified. The substances may be oxides, oxide hydrates, hydroxides, halogenides, phosphates, sulfides, nitrides or carbides of aluminum, silicon, alkali metals, alkaline earth metals, or secondary group elements. The surface modification may be carried out using organic compounds such as carboxylic acids, carboxylic acid derivatives, amino acids, hydroxycarboxylic acids, sugar acids, polyglycolic acids, ether carboxylic acids, alkyl halides, or silanes.
    Type: Application
    Filed: June 17, 2003
    Publication date: October 20, 2005
    Inventors: Christian Kropf, Claudia Hundeiker, Melita Heller, Christine Wild, Raymond Mathis
  • Surface-modified zinc oxide for the production of nanoparticulate dispersions
    Publication number: 20050048010
    Abstract: The present invention relates to a surface-modified nanoscale zinc oxide, where the surface modification involves coating with an oligo- or polyethylene glycol acid. This surface-modified zinc oxide is characterized in that it forms stable dispersions in a liquid medium. In addition, the present invention relates to a process for the production of surface-modified zinc oxide, and also to a process for the production of nanoscale zinc oxide dispersions.
    Type: Application
    Filed: June 21, 2004
    Publication date: March 3, 2005
    Inventors: Rainer Kliss, Ralf Elsasser, Melita Heller, Christian Umbreit, Horst Hahn, Christian Kropf, Mete Berber, Victor Carulla
  • Nano-sized zinc oxide in hygiene products
    Publication number: 20040033270
    Abstract: Hygiene products such as diapers, tampons, pantyliners and the like are produced using zinc oxide in the form of nanoparticles having surfaces that have been chemically and/or physically modified. The surface modification may be carried out using organic compounds such as carboxylic acids, carboxylic acid derivatives, amino acids, hydroxycarboxylic acids, sugar acids, polyglycolic acids, ether carboxylic acids, alkyl halides, or silanes.
    Type: Application
    Filed: June 17, 2003
    Publication date: February 19, 2004
    Inventors: Christian Kropf, Claudia Hundeiker, Melita Heller, Christine Wild
  • Coloring agent comprising transition metals
    Patent number: 6648925
    Abstract: The present invention relates to a composition for coloring keratin fibers and a method of using the same. The composition of the present invention contains at least one dye precursor, and one or more clathrate compounds that contain transition metal complexes.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: November 18, 2003
    Assignee: Henkel Kommanditgesellschaft auf Aktien (Henkel KGaA)
    Inventors: Bernd Mayer, Peter Kuhm, Horst Hoeffkes, Gertrud Ewald, Hans-Oscar Stephan, Melita Heller