Patents by Inventor Wilhelm Karl Schropp

Wilhelm Karl Schropp 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).

  • Preparation of readily polymerizable compounds
    Publication number: 20040068070
    Abstract: Process for the preparation of polymerizable compounds, apparatus for this purpose and use of this apparatus.
    Type: Application
    Filed: May 29, 2003
    Publication date: April 8, 2004
    Applicant: BASF Aktiengesellcschaft
    Inventors: Hans Martan, Wilhelm Karl Schropp, Gerhard Schulz
  • Process for separating acrylic acid from aqueous solutions
    Patent number: 3962074
    Abstract: Acrylic acid is separated from aqueous solution by extraction of the solutions with organic solvents and separating the organic phase from the aqueous raffinate. Extraction is effected with a mixture of from 1 to 50 parts by weight of butanol and from 1 to 10 parts by weight of butyl acrylate.
    Type: Grant
    Filed: May 6, 1974
    Date of Patent: June 8, 1976
    Assignee: BASF Aktiengesellschaft
    Inventor: Wilhelm Karl Schropp