Patents by Inventor Patrick Hoetzel

Patrick Hoetzel 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).

  • Patent number: 7855041
    Abstract: The invention relates to a pigment preparation which contains the monoazo pigment of the formula (I) and 0.1% to 40%, preferably 0.5% to 25%, in particular 1.0% to 17.5% of a pigment dispersant, in relation to the weight of the monoazo pigment of the formula (I), which is composed of disazo compounds at least 30% of the diazo compounds forming an asymmetric disazo compound of the formula (II) Y-X-A-X-Z??(II), in which A is biphenylene, 3,3?-dichlorobiphenylene, 3,3?-dimethoxybiphenylene, 3,3?-dimethylbiphenylene or 2,2?-dichloro-3,3?-dimethoxybiphenylene; X is a group —NH—CO—CH(COCH3)—N?N—, —N?N—CH(COCH3)—CO—NH—or —N?N—; Y is substituted or unsubstituted phenyl, pyrazolin-5-on-4-yl, 1-phenyl-Pyrazolin -5-on-4-Lyl, 2-hydroxynaphth-1-yl or 2-hydroxy-3-(phenylamino-carbonyl) naphth-1-yl, the substituents being C1-C4 alkyl, C1-C4 alkoxy, nitro, halogen or C1-C4 alkoxycarbonyl, and have the meaning of Y, and the compounds being further substituted with a sulfonic acid group present as an ammonium salt.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: December 21, 2010
    Assignee: Clariant Produkte (Deutschland) GmbH
    Inventors: Joachim Weber, Patrick Hoetzel, Karl-Heinz Schweikart, Frank Alfter
  • Publication number: 20090305156
    Abstract: The invention relates to a pigment preparation which contains the mono-azo pigment of formula (1) and 0.1 to 40% by weight, preferably 0.5 to 25% by weight, in particular 1.0 to 17.
    Type: Application
    Filed: April 20, 2006
    Publication date: December 10, 2009
    Inventors: Joachim Weber, Patrick Hoetzel, Karl-Heinz Schweikart, Frank Alfter