Patents by Inventor Steffi Bilke

Steffi Bilke 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 determining the enantiomer ratio trimethylcyclopentene derivatives
    Patent number: 7537933
    Abstract: The invention relates to a method for determining the enantiomer ratio of trimethylcyclopentene derivatives of structure (I), wherein Z is an alkyl radical having 1-10 C atoms, can be saturated or olefinically unsaturated, straight-chained or branched and which is substituted by an OH or CHO group, by means of capillary gas chromatography, wherein a stationary phase is applied containing a compound selected from the group of Heptakis-(2,3-di-O-methyl-6-O-tert.-butyldimethylsily)-?-Cyclodextrin and Heptakis-(2,3-di-O-acetyl-6-O-tert.-butyldimethylsilyl)-?-Cyclodextrin and at least one polysiloxane, wherein the mixing ratio of Cyclodextrin derivatives and polysiloxanes is adjusted to a value ranging from 10:90 to 50:50.
    Type: Grant
    Filed: September 3, 2002
    Date of Patent: May 26, 2009
    Assignee: KAO Corporation
    Inventors: Thomas Markert, Armin Mosandl, Steffi Bilke
  • Method for determining the enantiomer ratio trimethylcyclopentene derivatives
    Publication number: 20050019938
    Abstract: The invention relates to a method for determining the enantiomer ratio of trimethylcyclopentene derivatives of structure (I), wherein Z is an alkyl radical having 1-10 C atoms, can be saturated or olefinically unsaturated, straight-chained or branched and which is substituted by an OH or CHO group, by means of capillary gas chromatography, wherein a stationary phase is applied containing a compound selected from the group of Heptakis-(2,3-di-O-methyl-6-O-tert.-butyldimethylsily)-?-Cyclodextrin and Heptakis-(2,3-di-O-acetyl-6-O-tert.-butyldimethylsilyl)-?-Cyclodextrin and at least one polysiloxane, wherein the mixing ratio of Cyclodextrin derivatives and polysiloxanes is adjusted to a value ranging from 10:90 to 50:50.
    Type: Application
    Filed: September 3, 2002
    Publication date: January 27, 2005
    Inventors: Thomas Markert, Armin Mosandl, Steffi Bilke