Patents by Inventor Karina Kutschkau

Karina Kutschkau 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).

  • Pigment preparations for inkjet printing
    Patent number: 6465567
    Abstract: The invention relates to pigment preparation having (a) at least one organic pigment, (b) at least one optionally ionically modified phenol-styrene polyglycol ether, and (c) at least one surface-active agent that is (i) an oxalkylated acetylene glycol of formula (I)  wherein n is 0 to 14, m is 0 to 14, and m+n is 0 to 14, and/or (ii) compounds having the formulas (II), (III), and (IV)  wherein R is C6-C18-alkyl. R1 independently denotes H or C1-C4-alkyl, p is from 3 to 60, R2 is R or optionally C1-C18-alkyl-substituted phenyl, X is —SO3−, —SO2−, —PO3═, or —CO—(R3)—COO−; R3 is a divalent aliphatic or aromatic radical, and Kat is a cation.
    Type: Grant
    Filed: May 15, 2000
    Date of Patent: October 15, 2002
    Assignee: Bayer Akgiengesellschaft
    Inventors: Michael Grobe, Peter-Roger Nyssen, Michael Krause, Karina Kutschkau, Dirk Pfützenreuter