Patents by Inventor Daniella Geelen

Daniella Geelen 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).

  • Process for preparing two-metal cyanide catalysts
    Patent number: 6303533
    Abstract: A process for preparing double metal cyanide catalysts, comprising combining an aqueous solution of a metal salt of the formula M1m(X)n, with an aqueous solution of a cyanometallic acid of the formula HaM2(CN)b(A)c, where one or both aqueous solutions may comprises at least one water-miscible organic ligand selected from the group consisting of alcohols, aldehydes, ketones, ethers, polyethers, esters, ureas, amides, nitrites or sulfides, if desired, combining the aqueous suspension thus obtained with at least one water-miscible organic ligand selected from the above-mentioned group, which ligand may be identical to or different from any previously added ligand, and separating the resulting two-metal cyanide complex from the suspension.
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: October 16, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Georg Heinrich Grosch, Harald Larbig, Dieter Junge, Daniella Geelen, Peter de Vocht, Gerd Hoeppner