Patents by Inventor Ruediger Iden

Ruediger Iden 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).

  • Surface active random radical (co)polymer and dispersion method for using the same
    Patent number: 6624219
    Abstract: The present invention relates to a set of (co)polymers, dispersion formulations, solid solutions and formulation conditions able to disperse a dye selected from the group of a monoazo dye, quinophthalone dye and an anthraquinone dye in a stable nanoparticular form in an aqueous medium.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: September 23, 2003
    Assignees: BASF Aktiengesellschaft, SYMYX Technologies, Inc.
    Inventors: Robert Heger, Wolfgang Schrof, Michael Seufert, Helmut Auweter, Walter Mächtle, Rüdiger Iden, Dieter Horn, Ralph Nielsen, Eric Carlson, Chang Han-Ting, Sigrid Kuebler, Petro Miroslav
  • Aniline series azo reactive dyes ortho- or para-substituted by vinyl sulfonyl reactive groups
    Patent number: 4897469
    Abstract: Azo reactive dyes of the aniline series for dye or printing fiber materials of the formula ##STR1## wherein K is the radical of a coupling component, and Z is a vinyl sulfonyl reactive group ortho- or para- to the azo bridge.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: January 30, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz Eilingsfeld, Ruediger Iden
  • Concentration of light over a particular area, and novel perylene-3,4,9,10-tetracarboxylic acid diimides
    Patent number: 4667036
    Abstract: Light is concentrated in plastic sheets by a method in which the fluorescent centers used are perylenetetracarboxylic acid diimides of the formula ##STR1## The compounds (I) are prepared by chlorinating (I) in which n is 0 with sulfuryl chloride in an inert organic liquid in the presence of a catalyst. In the formula, n is 2, 3, 4 or 5 or 6, and R and R.sup.1 independently of one another are each (a) straight-chain or branched C.sub.1 -C.sub.18 -alkyl which is unsubstituted or substituted by cyano, hydroxyl, cycloalkyl, alkylcarbonyloxy, alkenylcarbonyl-oxy or cycloalkylcarbonyloxy and in which the alkyl chain may furthermore be interrupted by O or S, or (b) C.sub.5 -C.sub.18 -cycloalkyl which is unsubstituted or substituted by alkyl, carboalkoxy or trifluoromethyl.Novel perylenetetracarboxylic acid diimides of the formula I, where n is 4 and R and R.sup.
    Type: Grant
    Filed: August 20, 1984
    Date of Patent: May 19, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Ruediger Iden, Guenther Seybold