Patents by Inventor Astrid Kah-Helbig

Astrid Kah-Helbig 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: 5490990
    Abstract: A process for the production of solid pharmaceutical depot forms by application of a reconstituted aqueous dispersion of a pharmaceutically acceptable binder to a core which contains active substance or by wet granulation of the pharmaceutical active substance with such a binder dispersion or by direct tableting of an active substance with the redispersible binder powder, wherein the binder has been obtained by emulsion polymerization and subsequent spray drying of the resulting aqueous dispersion with a water-soluble pharmaceutically acceptable spraying aid with a glass transition temperature of at least 60.degree. C. and with or without a pharmaceutically acceptable antiblocking agent.
    Type: Grant
    Filed: June 21, 1993
    Date of Patent: February 13, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Sven Grabowski, Astrid Kah-Helbig, Axel Sanner, Kurt Wendel
  • Patent number: 5326586
    Abstract: A process for coating drug forms by application of an aqueous dispersion which contains as binder a redispersed latex of an emulsion polymer onto the drug form and evaporating the water at a temperature at which the latex particles form a film, comprises employing a polymer dispersion which has been prepared by emulsion polymerization of one part by weight of at least one ethylenically unsaturated polymerizable monomer, by means of initiators which provide free radicals, in the presence of from 0.1 to 2 parts by weight of saccharified starch, and from 0 to 5% by weight, based on the monomer or monomers, of a surfactant, with or without further conventional additives, drying to a powder and redispersing in water.
    Type: Grant
    Filed: October 7, 1992
    Date of Patent: July 5, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Sven Grabowski, Kurt Wendel, Astrid Kah-Helbig