Patents by Inventor Romanus Lehnfeld

Romanus Lehnfeld 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: 8512769
    Abstract: Process for preparing a valerian extract formulation comprising the steps of: a) extracting radix valeriana officinalis with alcoholic-aqueous extractants to obtain a raw extract, said alcoholic-aqueous extractant containing from 10 to 50% by volume of alcohol; b) at least partially removing the alcoholic fraction from the raw extract to obtain a viscous extract; c) contacting the viscous extract with a hydrophobic adsorbing agent; d) separating the hydrophobic adsorbing agent to obtain a purified extract; e) converting the purified extract to a valerian extract formulation using pharmaceutically acceptable auxiliary agents.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: August 20, 2013
    Assignee: Finzelberg GmbH & Co. KG
    Inventors: Björn Feistel, Hartwig Sievers, Romanus Lehnfeld
  • Publication number: 20100119630
    Abstract: Process for preparing a valerian extract formulation comprising the steps of: a) extracting radix valeriana officinalis with alcoholic-aqueous extractants to obtain a raw extract, said alcoholic-aqueous extractant containing from 10 to 50% by volume of alcohol; b) at least partially removing the alcoholic fraction from the raw extract to obtain a viscous extract; c) contacting the viscous extract with a hydrophobic adsorbing agent; d) separating the hydrophobic adsorbing agent to obtain a purified extract; e) converting the purified extract to a valerian extract formulation using pharmaceutically acceptable auxiliary agents.
    Type: Application
    Filed: September 25, 2007
    Publication date: May 13, 2010
    Inventors: Björn Feistel, Hartwig Sievers, Romanus Lehnfeld