Patents by Inventor Bernd Hostasch

Bernd Hostasch 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: 8834581
    Abstract: Described are dyes of formula (I) where R1 is hydrogen, alkyl, alkoxy, trifluoromethyl or halogen, M is hydrogen, an alkali metal cation or an optionally substituted ammonium cation, R2 and R3 are each independently hydrogen, alkyl or alkoxy, R4 is alkyl or alkoxy, R5 and R6 are each independently moieties of the formula —(CmH2m)—O—CnH2n+1, m is an integer from 3 to 6, and n is an integer from 0 to 8. These dyes are useful for dyeing and printing materials having polar groups.
    Type: Grant
    Filed: December 17, 2011
    Date of Patent: September 16, 2014
    Assignee: DyStar Colours Distribution GmbH
    Inventors: Aloysius Engel, Michael Joerss, Clemens Grund, Bernd Hostasch, Gunter Görlitz
  • Publication number: 20130333123
    Abstract: Described are dyes of formula (I) where R1 is hydrogen, alkyl, alkoxy, trifluoromethyl or halogen, M is hydrogen, an alkali metal cation or an optionally substituted ammonium cation, R2 and R3 are each independently hydrogen, alkyl or alkoxy, R4 is alkyl or alkoxy, R5 and R6 are each independently moieties of the formula —(CmH2m)—O—CnH2n+1, m is an integer from 3 to 6, and n is an integer from 0 to 8. These dyes are useful for dyeing and printing materials having polar groups.
    Type: Application
    Filed: December 17, 2011
    Publication date: December 19, 2013
    Applicant: DyStar Colours Distribution GmbH
    Inventors: Aloysius Engel, Michael Joerss, Clemens Grund, Bernd Hostasch, Gunter Görlitz