Patents by Inventor Andreas Wacker

Andreas Wacker 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).

  • Novel diketopyrrolopyrrole pigments
    Publication number: 20050234243
    Abstract: Diketopyrrolopyrroles of the formula (I): wherein R1, R2, R3 and R4 independently of one another are a C1-C4 alkyl radical or a substituted or unsubstituted phenyl radical, wherein the phenyl radical can be substituted by 1, 2, 3 or 4 substituents from the group C1-C4 alkyl, C1-C4 alkoxy, CN, F, Cl, Br, NO2, CF3, alkyl, phenyl or (C1-C2)alkylenephenyl, with the proviso that at least one of the radicals, R1, R2, R3, or R4, is one of the stated substituted or unsubstituted phenyl radicals.
    Type: Application
    Filed: June 6, 2003
    Publication date: October 20, 2005
    Inventors: Felix Grimm, Hans Metz, Joachim Weber, Andreas Wacker
  • Azo pigments
    Patent number: 6872245
    Abstract: This invention relates to azo pigments of general formula (I) wherein D represents the radical of a diazo component; R1 and R2 are the same or different and represent hydrogen, a C1-C4 alkyl radical which is optionally substituted by hydroxy, amino, halogen or methoxy, or a (C6-C10) aryl radical which is optionally substituted by one, two or three substituents from the group C1-C4 alkyl, C1-C4 alkoxy, F, Cl, Br, CF3, NO2, OH, CONH2, CONH(C1-C4 alkyl), CON(C1-C4 alkyl)2, COO(C1-C4 alkyl), SO2NH2, SO2NH(C1-C4 alkyl) and SO2N(C1-C4 alkyl)2, provided that R1 and R2 do not simultaneously represent hydrogen; R4 represents hydrogen, C1-C4 alkyl, halogen, trifluoromethyl, C1-C4 alkoxy, NO2, or CN; and n represents 1, 2 or 3
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: March 29, 2005
    Assignee: Clariant GmbH
    Inventors: Felix W. Grimm, Hans Joachim Metz, Andreas Wacker
  • Novel azo pigments
    Publication number: 20040231557
    Abstract: This invention relates to azo pigments of general formula (I) wherein D represents the radical of a diazo component; R1 and R2 are the same or different and represent hydrogen, a C1-C4 alkyl radical which is optionally substituted by hydroxy, amino, halogen or methoxy, or a (C6-C10) aryl radical which is optionally substituted by one, two or three substituents from the group C1-C4 alkyl, C1-C4 alkoxy, F, Cl, Br, CF3, NO2, OH, CONH2, CONH(C1-C4 alkyl), CON(C1-C4 alkyl)2, COO(C1-C4 alkyl), SO2NH2, SO2NH(C1-C4 alkyl) and SO2N(C1-C4 alkyl)2, provided that R1 and R2 do not simultaneously represent hydrogen; R4 represents hydrogen, C1-C4 alkyl, halogen, trifluoromethyl, C1-C4 alkoxy, NO2, or CN; and n represents 1, 2 or 3.
    Type: Application
    Filed: February 6, 2004
    Publication date: November 25, 2004
    Inventors: Felix W Grimm, Hans Joachim Metz, Andreas Wacker
  • Crystal polymorphs of a yellow disazo colorant, and their preparation
    Patent number: 6504045
    Abstract: The invention relates to six new crystal polymorphs, &agr; (alpha), &bgr; (beta), &ggr; (gamma), &dgr; (delta), &zgr; (zeta), and &eegr; (eta), of the disazo colorant of the formula I, having characteristic reflections in the X-ray diffraction spectrum. The novel crystal polymorphs are prepared by treatment in organic solvents.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: January 7, 2003
    Assignee: Clariant GmbH
    Inventors: Ruediger Jung, Hans-Joachim Metz, Joachim Weber, Martin U. Schmidt, Olaf Schupp, Andreas Wacker
  • New crystal polymorphs of a yellow disazo colorant, and their preparation
    Publication number: 20020065402
    Abstract: The invention relates to six new crystal polymorphs, &agr; (alpha), &bgr; (beta), &ggr; (gamma), &dgr; (delta), &zgr; (zeta), and &eegr; (eta), of the disazo colorant of the formula I, 1
    Type: Application
    Filed: September 13, 2001
    Publication date: May 30, 2002
    Applicant: Clariant GmbH
    Inventors: Ruediger Jung, Hans-Joachim Metz, Joachim Weber, Martin U. Schmidt, Olaf Schupp, Andreas Wacker